My cells are going vertical whenever it reaches the size of the ScrollingFrame’s X size, when it should go as far as the ScrollingFrame’s X CanvasSize. I have tried changing the AutomaticCanvasSize, using Offset instead of Size, and others, but none seems to work.
Representation of issue
If I try to add one more cell, it will go vertical instead of horizontal:
Try changing the UIGridLayout fill direction to “Vertical” and ensure scrolling frame’s AutomatiCanvaSize property is set to “X”. This may seem counter intuitive, but when I recreated your problem it worked!