This is weird behaviour because nowhere was it ever explained they implemented such system. This has been happening to me even before this patch a couple days before where i would log out in Aether Sargatanas and then after logging out to go sleep i would find myself in dynamis seraph again after waking up and logging in i get presented with "character couldnt be found" and i would have to manually log into dynamis again and find my character there again??
i became paranoid and logged into my mog station to check if someone else logged into my account but nope its just my IP and my logins. It doesnt kick me after 1 hour but im sure after +5 hours it kicks me from the data center i traveled to. i was already kicked from sargatanas back to back, i can replicate this issue without a doubt by just logging out in sarg for couple of hours just to find my character back in seraph. I tried to look up in reddit, google everywhere if theres something that explains this system but i can't find or read anything about this. I asked in shout chat once and one person experienced the same thing and reported it as bug aswell. So IDK whats going on and i would like an explaination?
Final edit and conclusion:
They deployed a hotfix for this issue which is now probably solved.
"・In Data Center Travel, the process of automatically returning characters to their Home World after being logged out for over 30 days in a different World may occur even if 30 days have not yet passed."
https://eu.finalfantasyxiv.com/lodes...0218e41b14ac06