ToME: the Tales of Maj'Eyal

I don't know exact way to recreate problem, but after finding Umbraphage and The Bladed Rift and equipping them both, having 5 level of charm mastery - all charm's cooldowns were set to 0 (zero). So, now in description every item, as example - Gwai's Burninator, written smth like "cost 0 of 75/75". And I can use items infinite times in row. More over, Umbraphage when I'd used it first time, had "cost 0 of -3/10" - so... modified talent tree works somewhat stupid...

What class are you? I've noticed the same bug as a Shadowblade. I'm fairly confident it comes from moving points in/out of that talent while ambuscading (the rest of the tree has similar bugs, have 108 infravision). Have not managed to reproduce it on my current Rogue.

Cornac Bulwark. Hmm... Can it be caused by prodigy point? Right before all that I take "Super Rush"...