[AI Bug] Webbed Units will Not use Ranged Attacks / Spells
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Elemental Forums
While melee units will attack enemies in range.
Ranged attackers who are webbed will not attack. Similarly, melee units will not use any spells they have (e.g. fire / lightning shrills casting their ranged attack).
I have not had the opportunity to use web on spellcasters such as Haunters, ghosts, and wildling/darkling shamans yet, but will update this post later if I meet some.