Met the requirements for Ajani's 0 ability to "Exile Ajani and each artifact and Creature your Opponent's control.", opponent has a theoretically infinite number of squirrel creature tokens (due to yet another unlimited mechanic as if they weren't already oppressive enough these days, I believe this instance was Rosie Cotton and Scurry Oak making unlimited +1/+1 counters bouncing off the squirrel tokens coming into play for as long as they had patience to click through...about 7 minutes worth all told in my case), finally they decide that several dozen tokens with +60ish/+60ish was adequate and ended their turn, I activate Ajani's 0 ability expecting a board wipe as they all count as creatures.....with absolutely no effect on any of the tokens in play.

I am currently only play on PC and so am unsure about other platforms.

I have no idea what I could possibly do on my end to fix or re-create this on my own. There have been many instances of cards not affecting what they should (especially creature tokens) but this was the most egregious by far. Creature Tokens are affected by things that target creatures, therefor something that exiles all creatures should affect them (although destroying them as they cannot be kept in exile as per the rules).

Unfortunately I do not have a screenshot as the match ended before I thought to get one (it would have simply shown an empty play field with lands and the other players obnoxious amount of tokens in any case) but I did include the generated log.