@BeastLife33 Hey there, unfortunately this is one of many unintended consequences of patch 1.69 back in January. It was packaged as improvements to Console controls but unfortunately it went a bit haywire and broke several functions. Here's the general thread to report issues:
https://answers.ea.com/t5/Technical-Issues-Consoles/Console-Controller-Feedback/td-p/11776350/page/67
I've added on page 67 a list of bugs that I've identified and some have their own bug reports. Here's one for terrain tools:
https://answers.ea.com/t5/Bug-Reports/XB-PS-Terrain-tool-will-not-drag/m-p/12347590#M241616
I'm afraid we haven't been kept in the loop about a timeline for fixes, so we can only wait and keep adding our issues to the feedback thread as we find them.
One tip I've found is that switching to Eraser tool and then back to Paint sometimes gets it to work better. I can't even enlarge the tool unless I'm in eraser.