Background of hamburger icon is visible

[svillar]

The hamburger menu for the back action is visible in some platforms. I've checked that it's properly drawn in

• Meta
• Pico

but visible in

• LenovoA3 (SnapdragonSpaces)
• Lynx-R1

[javifernandez]

This issue affects also to the "Exit app" icon shown with the right-hand gesture. However, in the case of that icon it's indeed transparent, but only showing the 3D environment.

If the icon appears in front of the Wolvic window, the transparency still shows the 3D environment.