BotINKi
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There's another bug like that. You can right-click near an enemy hero, and a window appears asking if you want to leave warriors to guard the area. You click yes (or no, I don't remember exactly), and the enemy hero's menu appears, where you can see all the artifacts, skills, troops, stats, and even browse through the spellbook... basically, it's as if it's your hero, although you can't remove troops or take off items – it's just in view-only mode. I observed this bug in version 3.50 while playing against a human opponent. And when I didn't know about this bug, playing with a friend in the same room over a local network, I wondered for a long time why he was clicking so furiously.