Lookahead Assertion not work

**Describe the bug**
cb remove '(?<=o)world '

 ✘  Internal error: regex_error(error_syntax)
┃ This might be a bug, or you might be lacking permissions on this system.

content of clipboard：
helloworld world

**Version**
Version     : 0.10.0
win11
powershell 7.6.0

