TheChakacha
Green Slime
While casting an ability, if you press Esc (inventory) while keeping the ability cast (keeping the key you have that ability at), all abilities but (piercing dash, fireball, earth spike and reapers blade) will keep casting, some blocking you from moving till you use anything else, others making you stay in the charging mode, etc... All are fixable in-game, so no big deal, but it could be annoying for players making combos with different weapons or whatever.