When using "/effect @p [potion effect name] infinite..." then disconnect the server. After join the server again, all the icon of the effects have disappear, but the particle is still there. Some like Regeneration, Resistance, Hero of the village... still working; while the Conduit Power, Water Breathing, Night Vision... not working after leaving the server and join again. This only happen to "infinite" duration, the normal duration like 999999 ticks still working. And those effects seemingly still there, since I unable to apply the affect with the same amplifier, and have to use higher level of that potion effect, or "/effect clear"