Groups inside user

[Aviortheking]

Hi, Awesome project that I plan on using !

To make it easier for other peoples, I have a WebDAV share that they have access to & I want them to have a personal folder & a group folder with only one share, but after testing it seems to not work.

[/u/${u}/]
  /w/folder/${u}/files
  accs:
    rwmd: ${u}
    A: @admin
[/u/${u}/common]
  /w/groups/4
  accs:
    rwmd: ${u}
    A: @admin

with this config I am able to access both my user files privately & common files with others with only one access location /u/${u} but as soon as a second user connects, it fails because the common folder already has the same histpath

copyparty-ac-1     | [Exception] invalid config; multiple volumes share the same histpath (database+thumbnails location):

is it a known limitation ?