Totem appears on player's screen when placed in off-hand slot of a zombie villager

I'm playing Minecraft when suddenly, the game puts a totem of undying in my head when I look north. I think it's because of the command block that replaces the slot.weapon.offhand slot of the zombie villager with a totem. Because of that, I can't make zombie villagers invincible without putting effect @e[type=Zombie_Villager] resistance 1 5 true in a repeating command block. Please fix it! Steps:
1: Give yourself a command block, 2: Place 2 command blocks on top of each other,
3: Delete the lower command block, 4: Change the upper command block to a repeating command block,
5: Type replaceitem entity @e[type=Zombie_Villager] slot.weapon.offhand 0 totem in the repeating command block,
6: Place a Block of Redstone under the command block,
7: Get a zombie villager spawn egg, 8: Spawn it, and finally
9: Look north, slightly offset to the left!