I was curious - will the new OnlyOffice built-in app work in a multi-server environment? With the app installed on each, will collaboration work if users are stickied to different nextcloud app servers? Or will they be unable to simultaneously edit the same document.
In which case i guess i would just need a separate server specifically for OnlyOffice?
I am guessing, but yes most likely you will need to run a seperate instance of the full document server.
This is similar to federated document sharing and editing with OnlyOffice, which also requires the use of the same Document Server.
Note however that you will probably need to remove the 20 concurrent connections limit and a very fast server, or switch to the for pay enterprise edition of OnlyOffice.