Lr crash when select all through cmd + A

Hello!

I would like to report a bug in Lr (cloud based desktop app) v5.1 on macos v11.5.1.

Main screen, "detail view" (the "D" shortcut view), with the bottom navigation bar visible ("film fixe").

Select one picture into the bottom navigation bar, cmd+A to select all pictures, Lr crashes as soon as you do the cmd+A (totally close the app without warning).

Issue is reproduced in 100% on my trials with above test.

Regards