With release of a new major version, some bugs and performance issues are inevitable - but will frequently be identified and addressed relatively quickly.
If you have a repeatable problem, you would be well advised to submit a Bug Report to Apple via its Product Feedback portal. For iPad and iPadOS:
Feedback - iPad - Apple
Every report counts - as until Apple receive a sufficient number or reports, it is perhaps unlikely that resources will be assigned to investigate and resolve the issue.
When submitting a report, ensure that you include as much detail as possible within the body of the report - including your iPad model and installed version of iPadOS; don’t rely upon the pick-list, as this rarely includes the full range of device models or most recent versions of iOS/iPadOS.
Otherwise, try a forced-restart - as this will often clear an isolated or post-update software issue:
Force restart iPad (models with Face ID or with Touch ID in the top button)
If your iPad doesn’t have the Home button, do the following:
- Press and quickly release the volume button nearest to the top button.
- Press and quickly release the volume button farthest from the top button.
- Press and hold the top button.
- When the Apple logo appears, release the top button.
