I expect when I use a Swiftness potion I (8:00) to get the full time. Yet I experienced on a server last night that the time of my swiftness potions stopped at 3 mins 10 secs and dissappeared.

The effects of the potion remained only for 4 mins and 50 secs. I don't know if that is a multiplayer bug because on singleplayer everything was ok. I even asked the server owner if he knew anything about this but he was rather surprised.

Could you help me?

Sincerely,
nopixelman