@gruber If you click on the Support button in the upper right (the circled question mark, which apparently has no Unicode character) and do “Report an issue”, many teams I knew triaged these reports and converted them into bugs to track in the issue tracker.

No idea what the Drive team does, but I assume they have some method of taking the feedback and turning it into something to evaluate and potentially act on internally.

The Material You guidelines on menus seem to say nothing, and even demonstrate both behaviors: m3.material.io/components/menu