

I recall spreadsheets being particularly painful on mobile when I’d try to select multiple rows and it would select way more at a time but would need to fouble-check that or find a screen recording if I made one at the time.
The main issues is there was a bug where if there is an open session for a document in Collabora (including dead sessions say from mobile) and that Collabora server is shut down in the wrong order, then all changes including if you click “Save” will be lost. A bug was opened for this and closed by making sure the servers shut down in the correct order, but I don’t know if that fixes cases where the servers a hard shutdown.
Most effective method for me has been to use 1 e-mail address alias per service. If that address starts receiving spam then you know who is to blame for the leak, can move that service to a new e-mail address and then blackhole all e-mails sent to the old address. That obviously means having to setup a new address for every service though so I usually setup 20 at a time and hand them out as needed.