Cancelling cologne not updating with board state

That's not a bug. It only applies to the Pokémon that was in the active when you played it. I can't figure out why you'd ever play the cards in that order, even if you thought it worked that way. You need to work on your sequencing.

Cancelling Cologne should work until the end of your turn (on you opponent Active Pokémon) no matter if the active changes... I used it many times but never got that issue, what was on your board?

Not sure if I got your board right. You mean in your side of the board was just Mew ex on the bench and Iron Thorns ex in the active?

If so, your own Iron Thorns disables your Mew ex abilities because Mew ex it's not a future Pokemon.

This is a bug.

Canceling Cologne reads: "Until the end for your turn, your opponent's Active Pokémon has no Abilities. (This includes Pokémon that come into play during that turn.).

I just got the same issue.
I played Canceling cologne at the start of my turn, to use my Fezandipiti ex ability; Flip the script.
I then got a Boss's orders because I wanted to KO my Opponent's benched Iron Thorns ex. So I boss'd up, and then switched to my Bloodmoon Ursaluna (which had 3 energies, and opponent had taken 2 prize cards = I meet the energy requirement to attack), but the game told me I only had 3/5 in order to attack.

The effect of the Cologne was REMOVED when the opponent's active Pokémon switched back to the bench. But Cologne should STILL be in affect as it is NOT the end of my turn. My turn ends after I announce an attack.

Please, fix this bug.