Also seeing this on an iOS device, but not Android (or browser based though I’ve not seen anyone complain about this from a browser). If it makes any difference, I am using the Linuxserverio docker image and running NC 20.0.4.
I’m not quite sure what to look for in the logs, but the first seemingly related one looks like this:
[core] Warning: Login failed: '<user>' (Remote IP: '<ip>')
PROPFIND /remote.php/webdav
from <ip> at <date-time>
A couple of those follow by a bunch of:
PUT /remote.php/webdav/<...>
Which l think all correspond to an attempt to upload some photos (manually).
No security or setup warnings in the admin overview.
Has anyone managed to figure out what this is yet or how to work around it before a fix arrives?