Hi @AstroBob and thanks for the reply
When I was troubleshooting this I came across several comments by others regarding the issue and assumed this was a known bug, so if it's not I'm going to continue troubleshooting my setup more first since it could be on my end.
I'm now wondering if the UltraStik 360 joysticks are actually the problem since although they're centered I see occasional slight movement by the sensors when looking in their configuration software, although it falls in the deadzone. I already have a large deadzone in my configuration but I tried increasing it further and it seems to have improved the problem (but didn't solve it fully) so that makes me think it's their sensors rather than a Big Box issue -- Maybe what's happening is that every so often a joystick's sensor is jumping out of the deadzone. When enabling "Use all controllers" perhaps having all four sticks enabled just makes the problem more frequent since there are more sensors to potentially cause problems.
I've updated LaunchBox and tested reverting to the default theme and neither solved the problem.
To clarify the problem ~ The behavior is inconsistent but about once every few seconds it will automatically scroll once or open search (both of these actions can be triggered by joystick movement).
Again, knowing that this isn't a confirmed bug I'm now suspecting a sensor issue with UltraStik 360 joysticks so I'm going to do a thorough cleaning and inspection of the sensors. I'll mark this thread as solved or follow up once I've done that.