No one is asking you to send them a fix. Since you are experiencing the issue on a stable release, you should let Mesa know that the issue exists in stable releases, and ask them to provide the fix for the stable 20.0.x branch.
No one is asking you to send them a fix. Since you are experiencing the issue on a stable release, you should let Mesa know that the issue exists in stable releases, and ask them to provide the fix for the stable 20.0.x branch.