Opus 13.6 and 13.7 not sure when it started to happen as only just started to use the right hand favorite
Clicking Favorites then moving into the pop up menu the menu disappears
Opus is full width off screen
The favorite is on the right list and the menu pops up on the left
If I move Opus away from the right hand side so the menu pops up on the right it works OK
Seems similar to Button Menu disappering
https://resource.dopus.com/t/button-menu-disappearing/45575