I can't help you with the rule but I just want to remark that this phenomenon is not restricted to what you call adjectival verbs. Perfectly regular adjectives are also infected.
Men taller than six feet always wear earrings.
I met a woman similar to you.
I met a woman stricken with grief. (I don't know if you consider "stricken" an adjectival verb here)
I'm in a room full of people.
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