Please see attached video...
Mitsubishi Dynaboar team only created a few mins earlier before this error incident occurred
This occurred on PS4. 1 Min before this video recorded, all team lists had all players in them.
I went to "edit players mode" and looked up teams in Custom players list for custom teams.
Note , The list is slow and takes a few seconds to load. It has always been like this due to players being customised or created.
NTT Team shared on Fanhub this morning...
Suntory Team - Only individual players shared on Fanhub this morning.
I have put all the players back in the teams and they seem to all stay there and be saved , even I turn off the game and restart it now.