We currently notify the fullscreen manager that we have entered fullscreen before the window has actually changed its state. We should wait until the window is actually in fullscreen mode.
Pull request: https://github.com/WebKit/WebKit/pull/17648
Committed 267896@main (513a457dd496): <https://commits.webkit.org/267896@main> Reviewed commits have been landed. Closing PR #17648 and removing active labels.