When GuiElement’s AbsolutePosition.Y is 0 and AnchorPoint.Y is set to 1, the GuiElement disappears.
Happens when Position.Scale.Y is set to 1 and AnchorPoint.Y is set to 0 too, but you may notice it glitching and appearing when moving the camera.
( Does not seem to happen for other values)
Reproduction file with 2nd scenario (Position.Scale.Y is set to 1 and AnchorPoint.Y is set to 0)
^ messing with camera
^ normally
repro.rbxm (46.6 KB)