When the game reloads resources e.g. mipmap level is changed or resource pack is changed it currently causes the game to crash because of the issue mentioned below. I have circumvented the issue temporarily, but am not too sure how to go about addressing the issue correctly.

The issue is that we use tags in the furnace burntime event, and I believe JEI Integration adds those to tooltips, and those tooltips are read at a point when tags aren't synched
-- BluSunrize (IE Developer)