Created attachment 105445 [details]
Capture of Kate with the transversal lines
Each time I load a file or resize Kate window, transversal lines of different thickness appears on Kate, till I scroll text, and so on.
*** Bug 382902 has been marked as a duplicate of this bug. ***
*** Bug 372629 has been marked as a duplicate of this bug. ***
*** Bug 383005 has been marked as a duplicate of this bug. ***
Does this occur with all window managers?
Well, it happened to me in KDE. Don't know if in other UI is happening.
I am actually able to reproduce this issue with any QTextLayout based applicaton.
Aka here my bugreport to Qt, using QtCreator as editor ;=)
=> Unfortunately I think, we can't fix that in KTextEditor.
I looked at the code and debugged the sizes, the layout sizes and the line height sizes match perfectly, in all zoom factors.
Just sometimes Qt renders too few pixels and that leads to the stray background leaking through, horizontally and vertically...
If we can't work around the issue in Kate, perhaps we should mark the bug as RESOLVED/NEEDINFO UPSTREAM?
Guess you are right.
As we don't know where in the layouting/drawing Qt will leave gaps, there is no chance to fix that, even if we would start to try to "overpaint" more.
It even happens inside text glyph runs in some zoom factors...
I must say that nowadays, I can't reproduce again the bug, at any zoom I apply. I don't know exactly when it were fixed by some update.
KDE Frameworks 5.32.0
Qt 5.6.2 (compilado con 5.6.2)
El sistema de ventanas xcb
So I can't help on this problems, cause for me is SOLVED.
This bug has had its resolution changed, but accidentally has been left in NEEDSINFO status. I am thus closing this bug and setting the status as RESOLVED to reflect the resolution change.