notty wrote:Sorry it's window decorations. I sort of solved it but saving the session. I'm going to mark as solved, but I still would like to know why it was happening in the first place.
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Sessions might have been the problem. I had a similar issue after upgrading the kernel. No windows manager at all anymore, nothing... googling I finally ended up on XFCE's FAQ page, there I noticed you can manually start the windows manager, which I did, problem solved, but they also said you should save the session to make sure it starts up automatically next time you login.
So I did and the problem has been solved ever since.
Somehow the kernel upgrade must have messed with something there in sessions I guess.
I assume that your saved session still pointed to your previous - last used - Desktop Engine somehow.
I''ll leave it to somebody more knowledgeable to explain how sessions works exactly...