Relogging while having an active potion effect will not trigger its effect

Tested with an infinite regeneration, amplified to 255. Although it showed up on the gui, and within the inventory screen, when damaged, it did not actually trigger.

This can be achieved by reloading into the world with an active potion effect when logging out.

 

Here is a stremable of the bug: https://streamable.com/e1vfk