I cannot disable a (ghost) breakpoint

I had this problem before and I found out that a file with the same filename was being referenced by the IDE that had break points. So do a search for your file and make sure that another file with the same name is not being referenced also.

This has been a bug in Delphi since at least Delphi 7.

Workaround: Delete all breakpoints or disable breakpoint from breakpoint window.