This case would specifically apply to Body Press and Foul Play, wherein body presses case should be boosted by the choice band, and in foul play's case should work with both huge power and choice band, because choice band boosts the moves power instead of just boosting the attack stat, and huge power boosts the power of all attacks you use, doubling your attack for the use of them even when using an opponents attack. I have tested this and neither work.

Thanks for the report, I could reproduce this. Marking as confirmed.

We're currently catching up on old tickets, and upon re-testing this issue, it seems it is still present in the current version (8.3.6), so I will be transferring this to internal. Thank you!