Unexpected crash

[MysaaJava]

I was just moving with the mouse between files.
Four files were open "header.tex","M2Report.tex","header-test.tex","test.tex".
I changed tab to "header.tex", and then i selected (with mouse) the line "\usepackage{autofe}".
Then i pressed backspace to delete it, and crash.

Texstudio proposed to recover, i did recover and it crashed again when i tried to edit the second line.
I recovered again, and modified other lines than the first or second, it worked. I modified the second line, it crashed.

I stopped texstudio and started it again, and it was not crashing anymore.

Environment

• TeXstudio: TeXstudio 4.8.1 (git 0.0.0++)
• Qt: Using Qt Version 5.15.13, compiled with Qt 5.15.13 R
• OS: Ubuntu 24.04 LTS -- Linux 6.8.0-38-generic LanguageTool errors not underlined #38-Ubuntu SMP PREEMPT_DYNAMIC Fri Jun 7 15:25:01 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
• TeX distribution: texlive-full package (i think it is unrelated)

How to reproduce

I did not find how to reproduce it :(

I am joining the backtraces of the different crashes that happened. They all happened during the same texstudio session (no restart)
texstudio_backtrace1.txt
texstudio_backtrace2.txt
texstudio_backtrace3.txt
texstudio_backtrace4.txt
texstudio_backtrace5.txt
texstudio_backtrace6.txt

I can conduct other tests if you want.
Here is the faulty file, converted to txt, and the recover file:
header.txt
header.tex.recover.bak~.txt

[sunderme]

any chance that "header.tex" was included in two open tex files ?

[MysaaJava]

I think it was opened in two files (M2report.tex and test.tex), and i removed the depedency from test.tex (i removed the include) and after the depedency was removed, i had the segfault

[sunderme]

I have played around with two root documents to the same header, but I get no crash.
Can you try to reproduce the issue ?

[sunderme]

can you provide your complete files ?

[sunderme]

I have found and fixed "a" crash.
Can you try out the latest dev build ? (https://github.com/texstudio-org/texstudio/actions/runs/11129741620)