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gui-bug-1.png: I removed a file, so of course the number of lines in the Favorites window changed. When I scrolled the Favorites window right afterwards, the text from some buffer got smeared at the top and the bottom of the component. This was reproducable. gui-bug-2.png: Lines of text from the Editor show up in the Favorites window. I was not able to reproduce this, but it happened twice today. In both cases, the smears go away after a while (and come back again later). I used today's 6.0dev build 200707241200.
Created attachment 45693 [details] smeared text in Favorites window when scrolling
Created attachment 45694 [details] smeared Editor text in Favorites window
*** This issue has been marked as a duplicate of 106940 ***
Does it also happen to you on dual monitor? Are you sure this is the same issue?
No, in my issue's case it's a single notebook screen. (MacBook)