The release notes have something about Disable Harvesting slot, which you have checked in island settings… if this affected the slots your island settings should have 4 ???
If you uncheck this does it affect teams slot numbers ?
Well we know they’ve been fiddling with equipment slots, so it could be human error
team settings having a limit of 4 is not really new to this update. It’s been thing for a good 2-4 years now I just assumed it was intentionally done that way for FNC. Given that swapping teams doesn’t really change maximum slots, and you could just have default be 5 slots from islands settings and only ovveride it on the team settings pad when you wanted a team to have less than 5 slots