Demon Form not working with 2 support gems on

So I have been playing Demon form with no issues up until now but when i equip both "herbalism" and "vitality" support gems on it wont activate anymore, even with full spirit (162)

It works fine with each individual support gem but as soon as i have both it stops working

Any support you socket into Demon Form does not work at all, I've tested this with Vitality, Clarity, and Cannibalism. You also cannot use SRS while in Demon Form.

thats good to know but its that form itself not working like i cant go into demon form i push the button and nothing happens

I Tested this and found that clarity and vitality doesn't work, BUT you can use Second Wind support gem to have 2 charges and keep demon form up 100% time and that does work fine. It must be a Bug with spirit reservation