Hide inline reply button in single message mode

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

@@ -1963,7 +1963,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
                     ibTranslate.setVisibility(tools && !outbox && button_translate && DeepL.isAvailable(context) && message.content ? View.VISIBLE : View.GONE);
                     ibHide.setVisibility(tools && button_hide && !outbox ? View.VISIBLE : View.GONE);
                     ibSeen.setVisibility(tools && button_seen && !outbox && seen ? View.VISIBLE : View.GONE);
-                    ibAnswer.setVisibility(!tools || outbox || (!expand_all && expand_one) ? View.GONE : View.VISIBLE);
+                    ibAnswer.setVisibility(!tools || outbox || (!expand_all && expand_one) || !threading ? View.GONE : View.VISIBLE);
                     ibNotes.setVisibility(tools && button_notes && !outbox ? View.VISIBLE : View.GONE);
                     ibLabels.setVisibility(tools && labels_header && labels ? View.VISIBLE : View.GONE);
                     ibKeywords.setVisibility(tools && button_keywords && keywords ? View.VISIBLE : View.GONE);