Card effects not working in Training Grounds

I played Training Grounds today and my cards were mostly not functional. Demolish did nothing, Volcanic Rambler did not destroy gems on entering, Shadow Spear added no Lifelink (even when fetched and cast by my opponent), Fiery Demise did no damage, Theater of Horrors did not put Activate Gems on the board and so on. For my opponent, everything worked fine. Was that a cheater or a bug?

OK, happened again. So no cheating, I guess. App restart seems to make it work again, but still weird.

Same here. Most of my cards do not work. Nissas renewal, dinosaur tokens, removals, shadow spear…

please see Something weird in Planechasing Filip (and other events) - MtGPQ Bugs & Technical Issues - 505 Go! Official Forums

I think that is an older issue that was seemingly fixed unless it has come back. I am in the Boros event and nothing that converts gems are working. The Gates on the board are not changing gems at the beginning of the turn. Cultivate is doing nothing – not even fetching a land. Deathsprout does nothing. Tolsimir enters the battlefield but no wolf token.

Everything described here is the same issue. They attempted a fix which seems to make it happens less; but, as evidence by this thread as well as my youtube video link, the issue still persists - albeit rare.

Restarting your mtgpq application will reset the problem - if that helps any.

@Foznertep - what you are describing sounds very much what I reported earlier and what was supposedly fixed.

I met this issue on titanomachy

https://drive.google.com/file/d/15mpJD05fR76YGYZVkuN27pibE1cJEsF-/view?usp=sharing
@Oktagon_Support

please looking and hurry fix it