Display lists keep rim wall lowered
As reported by sinewav on Discord: If display list settings are active, the lowering of the rim wall segments is 'sticky', they never come up again. Observed in AppImage 0.4.0_alpha_z5657 on NVIDIA GeForce RTX 2060 SUPER.
Probably a driver bug. Disabling display lists solves the issue, however we can globally work around it by just never using display lists for lowered rim walls.