I have 17 libraries setup as independent branches. I also have patron #5 setup as a super librarian. Prior to 3.2.6 this patron was able to access a bib record and add multiple holdings at different locations.
Now since that upgrade and still in 3.4.1, that person has to change her location setting on the top right. Then has to add that item to that location, go back change her location again. Then add that location item information, there are some days she has to do this multiple times and is a major work flow issue.
The default kohaadmin account is able to do this work with out any problems.
Not sure if this is a bug or an enhancement request, but it is still valid in master as of 3.12 beta1.
This works now - superlibrarians can edit all items with IndependentBranches turned on, independent of their homebranch.