The file "steps_to_reproduce_bug_report.txt" details the steps that I used to reproduce the ticket
Screenshots are attached as well, to help in conveying the steps.
Suggestions on Fix / Resolution:
A. Display an error message informing a user that it is not possible to remove an expanded path / can only remove collapsed list items
B. Enhance software so it can successfully remove a path if the path is expanded
Note: I have tested this on a trac 0.10 installation but believe it may affect a 0.11 Trac install too.
Note: Since there is NO data destruction occuring, I have left the severity as normal.