Redundant content copied

[MingStudentSE]

What happened?

When I want to copy the part of a block, it will copy the rest block.

Distribution version

Linux

What browsers are you seeing the problem on if you're using web version?

No response

Relevant log output

No response

Anything else?

No response

Are you willing to submit a PR?

• [ ] Yes I'd like to help by submitting a PR!