The confirm template has fixed the problem for survey, but not for the general case.
For example, on a host-mapped site in file-storage, go to modify permissions.
The standard permissions table is visible.
form action="/mapped_subsite/permissions/perm-modify" method="post"
The RP subsite hack can't process the post so we get the error:
We had some problems with your input:
You must supply a value for object_id
You must supply a value for return_url
When I try the same thing using the main site URL it works as expected.
Dave can you try to reproduce this?
