@aral Well... last night I bounced into three separate bugs when I tried to create a self hosted backup environment for Seedvault used in LineageOS et al when using webdav share with Davx5.
Now I found that also TrueNAS that I use in my NAS has a bug: it changes the ownership of whole filesystem to user webdav. Not only recursively from the directory used as the mount point of the share but the whole file system. :D