diff --git a/app/src/main/java/eu/faircode/email/FixedConstraintLayout.java b/app/src/main/java/eu/faircode/email/FixedConstraintLayout.java
index 6ba80086da..2eb0faee27 100644
--- a/app/src/main/java/eu/faircode/email/FixedConstraintLayout.java
+++ b/app/src/main/java/eu/faircode/email/FixedConstraintLayout.java
@@ -123,7 +123,14 @@ public class FixedConstraintLayout extends ConstraintLayout {
         }
     }
 
-    private final Map<Runnable, Runnable> mapRunnable = new WeakHashMap<>();
+    private Map<Runnable, Runnable> mapRunnable = null;
+
+    @NonNull
+    private Map<Runnable, Runnable> getMapRunnable() {
+        if (mapRunnable == null)
+            mapRunnable = new WeakHashMap<>();
+        return mapRunnable;
+    }
 
     @Override
     public boolean post(Runnable action) {
@@ -133,7 +140,7 @@ public class FixedConstraintLayout extends ConstraintLayout {
                 action.run();
             }
         };
-        mapRunnable.put(action, wrapped);
+        getMapRunnable().put(action, wrapped);
         return super.post(wrapped);
     }
 
@@ -145,13 +152,13 @@ public class FixedConstraintLayout extends ConstraintLayout {
                 action.run();
             }
         };
-        mapRunnable.put(action, wrapped);
+        getMapRunnable().put(action, wrapped);
         return super.postDelayed(wrapped, delayMillis);
     }
 
     @Override
     public boolean removeCallbacks(Runnable action) {
-        Runnable wrapped = mapRunnable.get(action);
+        Runnable wrapped = getMapRunnable().get(action);
         if (wrapped == null)
             return super.removeCallbacks(action);
         else
diff --git a/app/src/main/java/eu/faircode/email/FixedCoordinatorLayout.java b/app/src/main/java/eu/faircode/email/FixedCoordinatorLayout.java
index d0a659530d..f03249c462 100644
--- a/app/src/main/java/eu/faircode/email/FixedCoordinatorLayout.java
+++ b/app/src/main/java/eu/faircode/email/FixedCoordinatorLayout.java
@@ -63,7 +63,14 @@ public class FixedCoordinatorLayout extends CoordinatorLayout {
         }
     }
 
-    private final Map<Runnable, Runnable> mapRunnable = new WeakHashMap<>();
+    private Map<Runnable, Runnable> mapRunnable = null;
+
+    @NonNull
+    private Map<Runnable, Runnable> getMapRunnable() {
+        if (mapRunnable == null)
+            mapRunnable = new WeakHashMap<>();
+        return mapRunnable;
+    }
 
     @Override
     public boolean post(Runnable action) {
@@ -73,7 +80,7 @@ public class FixedCoordinatorLayout extends CoordinatorLayout {
                 action.run();
             }
         };
-        mapRunnable.put(action, wrapped);
+        getMapRunnable().put(action, wrapped);
         return super.post(wrapped);
     }
 
@@ -85,13 +92,13 @@ public class FixedCoordinatorLayout extends CoordinatorLayout {
                 action.run();
             }
         };
-        mapRunnable.put(action, wrapped);
+        getMapRunnable().put(action, wrapped);
         return super.postDelayed(wrapped, delayMillis);
     }
 
     @Override
     public boolean removeCallbacks(Runnable action) {
-        Runnable wrapped = mapRunnable.get(action);
+        Runnable wrapped = getMapRunnable().get(action);
         if (wrapped == null)
             return super.removeCallbacks(action);
         else
diff --git a/app/src/main/java/eu/faircode/email/FixedFrameLayout.java b/app/src/main/java/eu/faircode/email/FixedFrameLayout.java
index b2d6ec0ebe..8204b9e1d9 100644
--- a/app/src/main/java/eu/faircode/email/FixedFrameLayout.java
+++ b/app/src/main/java/eu/faircode/email/FixedFrameLayout.java
@@ -76,7 +76,14 @@ public class FixedFrameLayout extends FrameLayout {
         }
     }
 
-    private final Map<Runnable, Runnable> mapRunnable = new WeakHashMap<>();
+    private Map<Runnable, Runnable> mapRunnable = null;
+
+    @NonNull
+    private Map<Runnable, Runnable> getMapRunnable() {
+        if (mapRunnable == null)
+            mapRunnable = new WeakHashMap<>();
+        return mapRunnable;
+    }
 
     @Override
     public boolean post(Runnable action) {
@@ -86,7 +93,7 @@ public class FixedFrameLayout extends FrameLayout {
                 action.run();
             }
         };
-        mapRunnable.put(action, wrapped);
+        getMapRunnable().put(action, wrapped);
         return super.post(wrapped);
     }
 
@@ -98,13 +105,13 @@ public class FixedFrameLayout extends FrameLayout {
                 action.run();
             }
         };
-        mapRunnable.put(action, wrapped);
+        getMapRunnable().put(action, wrapped);
         return super.postDelayed(wrapped, delayMillis);
     }
 
     @Override
     public boolean removeCallbacks(Runnable action) {
-        Runnable wrapped = mapRunnable.get(action);
+        Runnable wrapped = getMapRunnable().get(action);
         if (wrapped == null)
             return super.removeCallbacks(action);
         else
diff --git a/app/src/main/java/eu/faircode/email/FixedLinearLayout.java b/app/src/main/java/eu/faircode/email/FixedLinearLayout.java
index a9905aa37b..ce55dc1181 100644
--- a/app/src/main/java/eu/faircode/email/FixedLinearLayout.java
+++ b/app/src/main/java/eu/faircode/email/FixedLinearLayout.java
@@ -24,6 +24,7 @@ import android.util.AttributeSet;
 import android.view.MotionEvent;
 import android.widget.LinearLayout;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
 import java.util.Map;
@@ -56,7 +57,14 @@ public class FixedLinearLayout extends LinearLayout {
         }
     }
 
-    private final Map<Runnable, Runnable> mapRunnable = new WeakHashMap<>();
+    private Map<Runnable, Runnable> mapRunnable = null;
+
+    @NonNull
+    private Map<Runnable, Runnable> getMapRunnable() {
+        if (mapRunnable == null)
+            mapRunnable = new WeakHashMap<>();
+        return mapRunnable;
+    }
 
     @Override
     public boolean post(Runnable action) {
@@ -66,7 +74,7 @@ public class FixedLinearLayout extends LinearLayout {
                 action.run();
             }
         };
-        mapRunnable.put(action, wrapped);
+        getMapRunnable().put(action, wrapped);
         return super.post(wrapped);
     }
 
@@ -78,13 +86,13 @@ public class FixedLinearLayout extends LinearLayout {
                 action.run();
             }
         };
-        mapRunnable.put(action, wrapped);
+        getMapRunnable().put(action, wrapped);
         return super.postDelayed(wrapped, delayMillis);
     }
 
     @Override
     public boolean removeCallbacks(Runnable action) {
-        Runnable wrapped = mapRunnable.get(action);
+        Runnable wrapped = getMapRunnable().get(action);
         if (wrapped == null)
             return super.removeCallbacks(action);
         else
diff --git a/app/src/main/java/eu/faircode/email/FixedRecyclerView.java b/app/src/main/java/eu/faircode/email/FixedRecyclerView.java
index fa3cfc5a0f..b1f403b5b3 100644
--- a/app/src/main/java/eu/faircode/email/FixedRecyclerView.java
+++ b/app/src/main/java/eu/faircode/email/FixedRecyclerView.java
@@ -211,7 +211,14 @@ public class FixedRecyclerView extends RecyclerView {
         }
     }
 
-    private final Map<Runnable, Runnable> mapRunnable = new WeakHashMap<>();
+    private Map<Runnable, Runnable> mapRunnable = null;
+
+    @NonNull
+    private Map<Runnable, Runnable> getMapRunnable() {
+        if (mapRunnable == null)
+            mapRunnable = new WeakHashMap<>();
+        return mapRunnable;
+    }
 
     @Override
     public boolean post(Runnable action) {
@@ -221,7 +228,7 @@ public class FixedRecyclerView extends RecyclerView {
                 action.run();
             }
         };
-        mapRunnable.put(action, wrapped);
+        getMapRunnable().put(action, wrapped);
         return super.post(wrapped);
     }
 
@@ -233,7 +240,7 @@ public class FixedRecyclerView extends RecyclerView {
                 action.run();
             }
         };
-        mapRunnable.put(action, wrapped);
+        getMapRunnable().put(action, wrapped);
         return super.postDelayed(wrapped, delayMillis);
     }
 
@@ -245,7 +252,7 @@ public class FixedRecyclerView extends RecyclerView {
                 action.run();
             }
         };
-        mapRunnable.put(action, wrapped);
+        getMapRunnable().put(action, wrapped);
         super.postOnAnimation(wrapped);
     }
 
@@ -257,13 +264,13 @@ public class FixedRecyclerView extends RecyclerView {
                 action.run();
             }
         };
-        mapRunnable.put(action, wrapped);
+        getMapRunnable().put(action, wrapped);
         super.postOnAnimationDelayed(wrapped, delayMillis);
     }
 
     @Override
     public boolean removeCallbacks(Runnable action) {
-        Runnable wrapped = mapRunnable.get(action);
+        Runnable wrapped = getMapRunnable().get(action);
         if (wrapped == null)
             return super.removeCallbacks(action);
         else
diff --git a/app/src/main/java/eu/faircode/email/FixedRelativeLayout.java b/app/src/main/java/eu/faircode/email/FixedRelativeLayout.java
index 066d8c6828..d6a94cd90d 100644
--- a/app/src/main/java/eu/faircode/email/FixedRelativeLayout.java
+++ b/app/src/main/java/eu/faircode/email/FixedRelativeLayout.java
@@ -24,6 +24,8 @@ import android.util.AttributeSet;
 import android.view.MotionEvent;
 import android.widget.RelativeLayout;
 
+import androidx.annotation.NonNull;
+
 import java.util.Map;
 import java.util.WeakHashMap;
 
@@ -54,7 +56,14 @@ public class FixedRelativeLayout extends RelativeLayout {
         }
     }
 
-    private final Map<Runnable, Runnable> mapRunnable = new WeakHashMap<>();
+    private Map<Runnable, Runnable> mapRunnable = null;
+
+    @NonNull
+    private Map<Runnable, Runnable> getMapRunnable() {
+        if (mapRunnable == null)
+            mapRunnable = new WeakHashMap<>();
+        return mapRunnable;
+    }
 
     @Override
     public boolean post(Runnable action) {
@@ -64,7 +73,7 @@ public class FixedRelativeLayout extends RelativeLayout {
                 action.run();
             }
         };
-        mapRunnable.put(action, wrapped);
+        getMapRunnable().put(action, wrapped);
         return super.post(wrapped);
     }
 
@@ -76,13 +85,13 @@ public class FixedRelativeLayout extends RelativeLayout {
                 action.run();
             }
         };
-        mapRunnable.put(action, wrapped);
+        getMapRunnable().put(action, wrapped);
         return super.postDelayed(wrapped, delayMillis);
     }
 
     @Override
     public boolean removeCallbacks(Runnable action) {
-        Runnable wrapped = mapRunnable.get(action);
+        Runnable wrapped = getMapRunnable().get(action);
         if (wrapped == null)
             return super.removeCallbacks(action);
         else
diff --git a/app/src/main/java/eu/faircode/email/FixedScrollView.java b/app/src/main/java/eu/faircode/email/FixedScrollView.java
index 4e55d67c2d..cae89125ea 100644
--- a/app/src/main/java/eu/faircode/email/FixedScrollView.java
+++ b/app/src/main/java/eu/faircode/email/FixedScrollView.java
@@ -5,6 +5,8 @@ import android.util.AttributeSet;
 import android.view.MotionEvent;
 import android.widget.ScrollView;
 
+import androidx.annotation.NonNull;
+
 import java.util.Map;
 import java.util.WeakHashMap;
 
@@ -133,7 +135,14 @@ public class FixedScrollView extends ScrollView {
         }
     }
 
-    private final Map<Runnable, Runnable> mapRunnable = new WeakHashMap<>();
+    private Map<Runnable, Runnable> mapRunnable = null;
+
+    @NonNull
+    private Map<Runnable, Runnable> getMapRunnable() {
+        if (mapRunnable == null)
+            mapRunnable = new WeakHashMap<>();
+        return mapRunnable;
+    }
 
     @Override
     public boolean post(Runnable action) {
@@ -143,7 +152,7 @@ public class FixedScrollView extends ScrollView {
                 action.run();
             }
         };
-        mapRunnable.put(action, wrapped);
+        getMapRunnable().put(action, wrapped);
         return super.post(wrapped);
     }
 
@@ -155,13 +164,13 @@ public class FixedScrollView extends ScrollView {
                 action.run();
             }
         };
-        mapRunnable.put(action, wrapped);
+        getMapRunnable().put(action, wrapped);
         return super.postDelayed(wrapped, delayMillis);
     }
 
     @Override
     public boolean removeCallbacks(Runnable action) {
-        Runnable wrapped = mapRunnable.get(action);
+        Runnable wrapped = getMapRunnable().get(action);
         if (wrapped == null)
             return super.removeCallbacks(action);
         else