[chaley]

That happens to me only when Moon+ (pro) wants to say something, usually the "whats new" dialog.

My guess is that one of us has changed one of the zillion settings that has an effect of this behavior. Some possibilities:
- Misc settings:
-- Open last file at startup: checked
-- Sync reading positions via dropbox: checked
- Control settings:
-- Back key: Close Moon+ reader

In case it helps, I have attached a backup of my settings (pro) to see if it makes the problem go away. The actual backup is inside the zip file, with an .mrpro extension. The file is binary and opaque so I don't know all that is in there. I suggest that before using it you make a backup of your own settings.

Edit: attachment removed out of general paranoia.