I have only one issue with windows 11, there seems to be a focus window issue that doesn't allow you at times to click on another app when premier is active. The work around for me was to click anywhere else on the task bar, then select the app you want to switch to. It's a minor issue and this workaround is 100% effective.
Other than this, windows 11 seems to not inject any issues to Premier that are not also present on windows 10. I would suggest you update to the very latest versions of Windows, and the video card driver in Studio mode. Early versions of windows 11 had other non-premiere related bugs that have been resolved well if you're on the latest build.