Safari 15.2 'position fixed' working incorrect
See example bug https://jsfiddle.net/vfxp7bLr/1/
When I click open button left side should open. Right side child has fixed element.
But after opening the right side intersects with the left side.
The issue does NOT seem to happen on current versions of Chrome (100.0) or Firefox (99.0).
MacBook Pro 16″, macOS 12.1