[Detective100]

Describe the issue: With Invigorate, while you have overdrive percentage from the spell? Your other spells won't cost any mana, no matter how much you spam them.

How to reproduce: Get a spell that costs mana (preferably something you can spam). Use the spell to see that you are losing mana visually from the bar and by pressing it.
Next, get invigorate. Charge up invigorate to roughly 50% perecent for testing purposes. Next, use teh same spell as before to see if you are losing mana. You'll notice that the blue bar doesn't go down, nor does it show you lost any mana if you press on the bar.