If I use Multi-Battle on the Magic Keep, or recently the Minotaur as well, there are a number of successful, normal runs,

then I can see the boss's turn meter is moving up more quickly than usual, resulting in a successful, but overly long run.

However in the next run, the boss's turn meter moves up even quicker, eventually to the point where 1 hero goes, then the boss goes, then 1 hero, etc, which is too fast to beat.

This bug manifests on my android tablet, Pixel 2 android phone, and on Plarium Play, although Plarium Play takes the longest time to fail (18 runs). On the table it can be as low as 1 sucessful run before the boss starts speeding up.

I'm using Kael, Price Kymar, Apothacary, Sinesha, & Coldheart.

Lately, in the last week I have avoided Multi-Batle (except for the Campaign) and found no issues, so the problem is with Multi-Battle on Dungeons, its not working reliably.

It is also odd that restarting the game does not reset the problem, but its gone the next day.