Question Scroll View becomes unresponsive after Scene Changes

I recently upgraded a Unity 2018 Project to Unity 2021 LTS and whilst everything appears to be working well, i've run into an issue with all of the Scroll View's.

When i first load the game, they work as expected.
After changing scenes, then returning back to the original scene, the Scroll View requires more of a drag before it starts moving.
After doing this a second time, and then returning back to the original scene, the scroll view requires even more of a drag before it starts responding.
repeating until it no longer responds to drags at all.

the scroll bar continues to work.
all other UI elements continue to work.

It works perfectly fine in the Editor, but once i push to either an IOS or Android device, the above behaviour occurs.
I'm not seeing any errors being thrown on the devices.

 

i know its old post but having the same issue, have you fixed this issue?