I have a few text buttons where :Activated() does not work at all on mobile, while scrolling is enabled in the frame.
Other scrolling frames are not impacted. The text button works when scrolling is disabled on the ScrollingFrame. The text button always works on computer.
Posting my solution in case this comes up in anyone’s searches.
I had ZIndex of the button equal to ZIndex of the frame.
Raising ZIndex fixed this problem. It wasn’t an issue on desktop; nor on mobile outside of the ScrollingFrame, or when scrolling was disabled on the ScrollingFrame; so I can only assume ZIndex behavior works differently in ScrollingFrames on mobile than it does on non-scrolling frames or on desktop.