Setting 'border-top' property for QMdiArea in style.css causes LMMS to freeze when maximizing any subwindow
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- Dominant language
- C++
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Description
### System Information
Windows 10
### LMMS Version(s)
lmms-1.3.0-alpha.1.102+g89fc6c960-mingw-win64
### Most Recent Working Version
_No response_
### Bug Summary
Setting 'border-top' property for QMdiArea in style.css causes LMMS to freeze when maximizing any subwindow (like Piano Roll or Song Editor)
### Expected Behaviour
Not freezing
### Steps To Reproduce
1. Set border-top property for QMdiArea in style.css (e.g. border-top: 1px solid black;)
2. Open LMMS
3. Maximize Song Editor
4. Try changing horizontal zooming, for example
### Logs
Click to expand
### Screenshots / Minimum Reproducible Project
_No response_
### Please search the issue tracker for existing bug reports before submitting your own.
- [X] I have searched all existing issues and confirmed that this is not a duplicate.
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the freeze on Windows 10 with the border-top rule in style.css, then maximize Song Editor and change horizontal zooming. Trace the QMdiArea styling and subwindow behavior implicated by the reproduction. Done means maximizing a subwindow and changing its horizontal zoom no longer freezes LMMS with the border-top rule present.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp, css
- Domain
- desktop
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100