Explosive Trap skills keep resetting

My Rogue has a +2 to fire skills item (bow, DragonSong). 22 points have been assigned to Explosive Trap. I’ve found that whenever I log into the game, or teleport to a different area in-game that the last two skill points keep getting reset. I don’t remove/re-equip the weapon - this issue occurs merely by logging into the game or traveling to a different area in the game.

Anyone know if this Is a known issue?