
Message list disappears in pane, come back when view mode changed
I have a dual boot system, win-10 and Ubuntu 16.04 I have installed several TB versions 38-49 on win-10 and all have the same problem when using the Ubuntu profile. All mail accounts are present when started, but as soon as I click on an account message box list, the mails flash away. If I change the view to for example unread and then back to all, the message list re-appears again and I can navigate and see previews in the preview pane. When I click another account, the message list disappears again. This is for all imap accounts.
double-clicking the 'unread' button (going to unread and back to all again) in the quick filter bar allows me to have the message list re-appear again so that I can see my mails and work with them.
Under Ubuntu everything works fine. This is some kind of display bug under windows 10 as far as I see it. It has nothing to do with the view settings, threads, unread/read, etc.
When I click an empty message list box I see the emails flashing into existence end than the message box going to an empty pane again, until I double click the 'unread' button on the quick filter toolbar or do any other view setting change.
This only happens with imap accounts, pop3 accounts work just fine. The sa e imap accounts work fine under Ubuntu, just not under win-10.
Any idea what this is?