Subs rolling separately is a minor issue in low luck games. If you have 1 ss 1 dd 2 bb against a fleet with a dd–the total punch is 12, but it’s quite possible to only get 1 hit. It would be an improvement if subs are lumped in with the gross total in that scenario (eg only if the enemy has a dd that negates the surprise shot).
Sorry, my last bug report may have been not-actually-a-bug.
The enemy ships that appeared to co-exist with the own were not moved but built there in the Purchase Phase.
I understood this is forbidden in some A&A versions and allowed in others - but can’t track now which is which ;-)
The scenario may have used the setting which allows that.