As far as I'm concerned, yes.

Can this ticket be closed?

I'm with Jan on this one. Adding a few links to app login screens for 
Horde-authenticated users is okay with me as a potential solution.

My personal opinion is that this is a user problem. It's not different 
from the situation when they didn't yet login to Gollem. If the user 
actively turn off the left menu, they should be aware that they can't 
switch between applications.



A solution still might be though to show the application and site 
links in the application login windows if the user already is logged 
in to horde. A stripped down menu, only with horde wide menu items.

There seems to be a bit of an issue for applications which allow a 
backend to be changed (i.e. IMP, Gollem) and the situation where the 
user does not have a menu frame.  The issue is as follows:

1) User logs into Horde using foo authentication.

2) User accesses gollem (for example) and gets the gollem login screen

3) User has more than 1 backend so they select a backend and login to gollem



Now, gollem has a logout link ONLY to logging out of Horde completely. 
  I recently added another link (in gollem only) for this situation 
that allows a user to log out of gollem only and change backends.  The 
problem with this solution is that, on the gollem login screen, there 
is no indication that the user is still logged in to Horde and no way 
to access any other Horde screens without logging into Gollem again 
(these last 2 issues are more UI issues than bugs).