Permanent slow debuff?

When I was doing t1 maps I noticed that my attack speed suddenly slowed down despite there being no debuff at all on me? Is this something like a temporal bubble affix on the enemy not being cleansed when I get out of their range?

This bug is even slowing down my dodge rolls, which doesn't make sense.

I managed to clear the final boss in the map and somehow my attack speed returned to normal. Is it possible that the boss' aura is mistakenly applied globally and not showing up as debuffs? The map is the augury t1 map.