what happens is sometimes while im fighting mobs i will use my nightblades leap attack (i guess it would be considered a gap closer) and every once in a while my character will lose its weapons from its hands and i wont be able to use any attacks/skills. the only way ive found out how to fix this is either waiting and hoping to not die as the npc/mob is still killing me, or use a potion or go into the menu and unequipting and re-equipting my main weapon. in order to be able to start attacking them again.
also side note, i am able to move around while this happens but the npc/mob is where i was attacking air and dealing damage to me, which is why i assume its lag?