Paint version 11.2402.32.0 is now testing a slider, giving users more control and sizing options.

“Copy” (Ctrl + C) will copy the visible content from the current layer only."

It’s worth mentioning that all of these features are currently in the “testing” phase for users.

New layers option in Microsoft Paint

Microsoft

Thus, they may not be available to all Insiders.

Microsoft will continue testing each tool and expand the rollout for more people as it receives feedback.