I have encountered this bug a few times, when enemy figure turned grey but still delivered an attack for a second time. Here`s log: Gitgit discarded Walk. Gitgit discarded Ember Spray. Westven drew Run. Westven drew Vicious Thrust. Westven drew Powerful Hack. Balin drew Walk. Balin drew Reliable Mail. Balin drew Powerful Hack. Gitgit drew Walk. Gitgit drew Magma Spray. Gitgit drew Glob of Flame. War Monkeys drew Scamper. War Monkeys drew a card. War Monkeys drew a card. Westven powerfully hacks Kara Kara was ready for that! War Monkeys drew a card. Monkey Mail failed! Monkey Mail reduced damage to Kara by 2. Kara took 9 Slashing damage. Kara tries to steal from Westven. Westven slips away! Pickpocket was cancelled. Westven discarded Hard to Pin Down. Balin powerfully hacks Kara Simian Reflexes failed! Monkey Mail failed! Monkey Mail reduced damage to Kara by 2. Kara took 9 Slashing damage. Gary passed. Westven moved. Westven delivers a vicious stab to Kerchuk Kerchuk was ready for that! War Monkeys drew a card. Monkey Mail reduced damage to Kerchuk by 2. Monkey Mail reduced damage to Kerchuk by 2. Kerchuk took 3 Piercing damage. Kerchuk punches Gitgit with a simian fist! Thick Hide Armor reduced damage to Gitgit by 2. Gitgit took 3 Crushing damage. Gitgit shoots a cone of flames Kara was ready for that! War Monkeys drew a card. Monkey Mail reduced damage to Kara by 2. Kara took 0 Fire damage. Kara attacks Balin in a cowardly fashion. Reliable Mail reduced damage to Balin by 2. Reliable Hide Armor reduced damage to Balin by 1. Balin took 1 Piercing damage. And another bug I have met: after disconnecting and rejoining SP game all grey enemy figures become activated again.
Simian Reflexes restores the monkey's action point when it succeeds. The reconnect does sound like a bug, though. Does the server allow them to act again?
I think there's a bug with reconnection where grayed out minions don't look grayed out, but still can't attack. Let us know if this isn't the case.