Fixed for the next update.
Dunno when "next update" was / will be, but experience bar in oddity mode is still bonkers at lvl 25.5, in 1.1.5.12. Attached is a screenshot with the bar visually full yet on hover over it it's clear only half experience towards next level is actually gathered. Just looks weird at exactly this point.
Also, what's with mechanical resistance on Shroomlings listed twice for each single Cryokinesis hit (same here screenshot, combat log)? That another bug maybe? Looks weird for sure.
P.S. They usually say to use search before posting a new bug. Hence the necro: forum search works. Not bugged, yep.