These URLs that I mentioned are those that are being loaded in the background for the treeview box, when I view a description (i have set to "full width" in the treeview settings). I don't know how I found out, either by using Chrome's developer tools or by looking into the treeview.js file.
Anyway - the complete treeview at /browse/hierarchy does work for all cultures except french, too. I only see the loading icon.
index.php/browse/hierarchy?sf_culture=fr NOT OK
So it seems like it does not work for all the descriptions.
The descriptions were created by EAD.xml import via GUI. A culture was not set (see my other recent conversation, you probably remember, https://groups.google.com/g/ica-atom-users/c/diZzGdQoj-U
) , the default culture "de" was used. I don't think that's a problem in general, as for the same procedure, in italian, the treeview works.
The site uses a custom theme, for more than a year now, without problems. It's based on the default theme and only has different css stylings.
I can't think of anything different now