[Scummvm-tracker] [ScummVM :: Bugs] #15267: Moonbase Commander Main menu screen goes black in default (OpenGL) render mode

[ScummVM :: Bugs]

#15267: Moonbase Commander Main menu screen goes black in default (OpenGL) render
mode
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Reporter:  Mardeg  |      Owner:  (none)
    Type:  defect  |     Status:  new
Priority:  normal  |  Component:  Engine: SCUMM
 Version:          |   Keywords:  graphics
    Game:          |
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 Architecture: arm64 (Raspberry Pi 400)
 OS: Debian GNU/Linux 11 (Bullseye)
 Kernel: Linux 6.1.21-v8+

 Moonbase Commander version: 1.0/Windows/English (All data files copied to
 rPi after installing from CD)
 SCUMMVM version: 2.9.0git (July 11 2024) Snap


 Expected behaviour: Main menu remains visible

 Actual behaviour: After intro completes without problems, a "partially
 visible" main menu appears for a few seconds then goes black. Moving the
 mouse around and clicking where buttons would normally be visible still
 works. If doing so before it goes black on any buttons except
 single/multiplayer mode, those screens appear normal until returning to
 Main menu, upon which the same behaviour occurs. Clicking either single or
 multiplayer buttons results in the screen immediately going and remaining
 black while audio still plays and it still responds to mouse clicks.
 The described behaviour happens regardless of Full Screen being selected
 or V-sync being unselected in SCUMMVM settings for the game.

 Workaround: Switching the Render Mode in ScummVM settings for the game to
 "SDL surface" prevents the screen going black, and graphics remain
 visible/game is playable when clicking single/multiplayer. This mode
 resizes the SCUMMVM window down to the original resolution of the game,
 I'm guessing.

 Screenshot: Partially visible main menu before it goes black
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Ticket URL: <https://bugs.scummvm.org/ticket/15267>
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