Netrunner: Doing takebacks with Bacterial Programming messes with runners mu and hand size

[AndersRask]

Me: Corp on Chronos Protocol
Runner: Chaos Theory

I messed up my Bacterial Programming turn when runner stole it, so we did 2 takebacks getting runner to do /undo-click

We then observed something weird: when doing undo, runners mem went to -1 and his hand size was suddently 2 instead of 5. On the screenshot runner had already adjusted back to 5

[Saintis]

Brain Chip is definitely the culprit here as that changes MU and hand-size.