The window flickers at startup on Windows
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- Dominant language
- Rust
- Stars
- 9.7k
- Forks
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- PR merge metrics
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Description
OS: Windows 10 21H2
Druid: https://github.com/linebender/druid#8d829c5e
The window sometimes flickers at startup on Windows 10, especially when the background color is similar to the window's, check the attached gif.

The window is created by a simple project, like the hello example:
[test2.zip](https://github.com/linebender/druid/files/7612865/test2.zip)
Remember to run it with the dark VS Code in the background.
Contributor guide
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 issue with the provided simple project or hello example on Windows 10 21H2, using dark VS Code in the background as described. Compare startup behavior with different background colors and use the attached GIF as the symptom reference. Done means the window no longer flickers during startup.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- desktop, operating-systems
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100