jiggling text and deviations in text cursor position

[octaeder]

Environment

• TeXstudio: This is not in 4.8.4, but in current dev
• Qt: 6.8.0
• OS: Windows(10)
• TeX distribution: miktex

Expected behavior

cursor mark should be positioned correctly, text should not move

Actual behavior

see images below, I assume that this is introduced with Qt6.8.

How to reproduce

It seems to be a random effect, difficult to reproduce. First I set the cursor at the beginning of diam near start oft the first line. Character d and the mark fit closely. Then I set cursor mark to the same word near end of the second line. The mark is about 1/3 of character width mispositioned to the left (this can be quite irritating). I select the word (ctrl+d) and deselect the word (macro with ctrl+q). Be aware of the movement of the following text (2px, character width 7px). Font used is JetBrains Mono in size 9. Maybe there's another change for fonts like I fixed in #3548.

random text used

Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et

[sunderme]

works fine on ubuntu.
qt6.8.1 will come up soon.

[sunderme]

do you still see the issue with rc2 ?

[octaeder]

indeed, I tested with portable version after copying my .ini file:
TeXstudio 4.8.5 (git 4.8.5rc2)
Using Qt Version 6.8.1, compiled with Qt 6.8.1 R

Maybe you are talking about Qt6.8.2 announced for 23.01.2025?

[sunderme]

so, you still,see the issue with txs 4.8.5rc2?

[octaeder]

yes

[octaeder]

I updated my msys2 to Qt6.8.1. Same issue. Let's hope for 6.8.2