Android Studio says so ...

app/src/main/java/eu/faircode/email/FragmentAccounts.java

@@ -123,7 +123,7 @@ public class FragmentAccounts extends FragmentBase {
             }
         });
 
-        rvAccount.setHasFixedSize(true);
+        rvAccount.setHasFixedSize(false);
         LinearLayoutManager llm = new LinearLayoutManager(getContext());
         rvAccount.setLayoutManager(llm);
 

app/src/main/java/eu/faircode/email/FragmentFolders.java

@@ -160,7 +160,7 @@ public class FragmentFolders extends FragmentBase {
             }
         });
 
-        rvFolder.setHasFixedSize(true);
+        rvFolder.setHasFixedSize(false);
         LinearLayoutManager llm = new LinearLayoutManager(getContext());
         rvFolder.setLayoutManager(llm);
 

app/src/main/java/eu/faircode/email/FragmentMessages.java

@@ -509,7 +509,7 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
             }
         });
 
-        rvMessage.setHasFixedSize(true);
+        rvMessage.setHasFixedSize(false);
 
         int threads = prefs.getInt("query_threads", 4);
         if (threads >= 4)