This issue due to the bug related to the latest update on March 2026 builds.
KB5079473 (OS Build 26200.8037)
I've a question for you: is your computer currently syncing with a mobile device via Phone Link?
Try Disable App-Level Auto-Copy:
Open the Snipping Tool > Settings > Under the "Snipping" section, toggle OFF "Automatically copy changes to clipboard.
Worth Check out the below settings as well: