Hello,
It seems something similar was already reported back to 2017, but I would like to write about it anyway.
Version 3.3.5.
I played skirmish with tech level set to 7. It seems that AI Epsilon (PsiCorps at least) can bulids Chimera Core, Psychic Tower and Antares Battery anyway even with this tech level but it does not allowed to me (as Scorpion Cell).
Screenshot:
Spoiler