In the rules admin ui I have the path "admin/rules/rules/%" as well as others below that like "admin/rules/rules/%/delete" or "admin/rules/rules/%/edit/%". The problem is now that the paths "below" doesn't get the parent correctly assigned. So they loose the overall context, meaning even the administration menu point is closed - what is weird.
The problem is that "admin/rules/rules/%" gets hidden set to -1 and as a consequence the parent is set to 0 and the context is gone. Is there a cause for doing so?
I tried removing this behavior, which fixed the problem for me and i didn't note any other issues with it. Patch attached.
Note: I had the problem in d6, but I think it applies to d7 as well. The patch is for d6, but applies to d7 too.