Hello @lazcas ,
Please try clearing data and cache of Samsung keyboard app . If issue persists, Please send us an error report from the Samsung member’s app -> Beta Feedback -> Error Reports to help us debug the issue. We apologize for the inconvenience and appreciate your contribution to the beta program.
One UI Beta Team
I suggest that you have Clipboard on your Edge Panel. Then you can flip it open and copy what you want to paste then go paste it