Thorn Lieutenant not reinforcing on enemy match

Panyfire

 Card says when enemy matches active gem, reinforce this card (or words to that effect). 
It was working Thursday last week, and is a great card, but since the Friday update it no longer works when the AI matches any of the two green gems, only when you do. 

Rhasget

It has to be a gem that belongs to Greg that is activated. It doesn't trigger when he matches your activate gem.

If the opponent doesn't have any cards that activate gems it can't trigger on his turn.

The wording is:
'Whenever an Active gem is activated by your opponent, reinforce this creature'.

Since Greg can't activate your gems, they only get destroyed, this is a correct function.

I have built an activate deck with this card in it and it has worked as intended sofar.

Panyfire

Aha, clear as mud. Thank you.