For some reason, Google Play now wants me to update all the cracked applications. This hasn't happened before. Anyone else run into this problem?

Yeah, a lot of people are reporting it on Reddit & Twitter. Seems to be rolling out globally

Same here, getting update notifications for Spotify,YouTube and Speed test,no way of clearing them too.

[WarezNetUSA]

Same here

Reddit
Sense v2 flip clock
Spotify
Watchmaker
X

It's not just mobilisim it's happening with xmanager too

[Zbignieww]

Yep. Annoying to see constantly popping up as failing update for Medium app.

I update manually. Always works.