Labyrinth Cave softlock

[Adex-8x]

This has been a common issue for some time now, where upon completing the randomized version of Labyrinth Cave (Dungeon 91), the cutscene D80P41A/m99a0129 would appear glitched and eventually softlock.
This is due LEVEL_D80P41A being a Type 11 level, where it maps Labyrinth Cave final floor's Fixed Room to the Map Background. However, if the final floor of Labyrinth Cave is not a Fixed Room, then the Map Background will not be loaded properly, eventually causing the aforementioned glitch.
A potential fix could be to ensure the final floor of the randomized Labyrinth Cave has Fixed Room 80.