Currently it does not work in:
- Rename
- MkDIr
- Breadcrumbs bar (when "clickable paths" is disabled)
- (i'm probably missing other places too but the above are the most important)
How it should work? IMO it should either delete all text left of the cursor, or delete text up to the first \ before the cursor (as it works in the command-line). My vote in on the command-line way.