There are two issues with ground-attack and invisibilty:
1. ground attack does not work against neutral camps during invisibility. This is especially inconvenient for Lycan and Broodmother's units. It works against all other units, just not neutrals.
Edit: Upon further inspection, it seems the ground attack command does not work on neutrals at all, until the neutrals become hostile, which of course does not happen if a unit is invisible.
2. The ground attack command (or any attack command) is disabled once the unit reaches its destination (or becomes inactive). This occurs for all invisible units, whether they receive invisibility before or after becoming idle. Repro: Summon level 4 wolves with lycan, attack-ground to a spot where enemy creeps will walk but haven't yet, wolves will stay hiding as the creeps walk past. If new spiderlings are spawned with no nearby units to attack, they won't attack the next unit that comes close.
1. ground attack does not work against neutral camps during invisibility. This is especially inconvenient for Lycan and Broodmother's units. It works against all other units, just not neutrals.
Edit: Upon further inspection, it seems the ground attack command does not work on neutrals at all, until the neutrals become hostile, which of course does not happen if a unit is invisible.
2. The ground attack command (or any attack command) is disabled once the unit reaches its destination (or becomes inactive). This occurs for all invisible units, whether they receive invisibility before or after becoming idle. Repro: Summon level 4 wolves with lycan, attack-ground to a spot where enemy creeps will walk but haven't yet, wolves will stay hiding as the creeps walk past. If new spiderlings are spawned with no nearby units to attack, they won't attack the next unit that comes close.
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