Empty menu items on top

[MvBonin]

This happens for me for different indicator-apps.
Flatpak-Steam is an example.
When starting steam, the indicator-menu looks fine.
After starting a game, There are a lot of empty menu-items on top.
When I start a few games, the indicator-items move down until I cant see the menu Items anymore.

Maybe that happens, when the Program tries to redo the menu. I could imagine, that the old menu-items dont get fully destroyed.