Potential gain as extra bug with twisters

Hi all,

I've seen in some guides that gain always occurs in "step 2" but I've noticed that the in-game tooltip says that gain has the same two step process as conversion.

When I have purely physical damage (phys spear, absolutely no added ele damage) and I shoot a cold-infused twister while wearing painter's gloves, the twisters are able to shock and ignite. Am I wrong that this implies the gained cold damage has occurred in step 1?

1. Is this intentional? Since the twister gain is "skill based?"
2. Do support gems activate in step 1 or 2?