The Markovian’s Vigilance bonus that takes 1.2 seconds off cooldowns on getting hit now locks out some of my skills when they finish cooling down. They still read “skill recharging” and can’t be used anymore. So far saw the issue with Blitz, War Cry, and Overguard. Other characters using the 3 affected skills without the Markovian’s set are doing fine.
Same goes for the Eternity relic proc.
Time Dilation (Aeon’s Hourglass) makes cd skills in infinite recharging. It looks like the same bug.
When skill was in cd, then, Time Dilation reduced its remaining cd to 0, it would beceme unavailable.
Meanwhile, Blitz and some medal runes become 0 seconds cd and spamming.
Edit. Charge/Blitz-like skills with caster offhand/empty left hand. I used Blazing Ends in this gif.
If the character did not actually move, charge skills wouldn’t recharge and were spamming used.
Can confirm I am getting the same behaviour with Aeon’s Hourglass. It locks out all my skills on my Warlock and I cant cast anything after a while. AAR, SoC, BoD all say “Skill recharging” in the red flavour text on the skill. @Zantai can you help put the cool back in cooldown? 
I noticed with my Druid using Eternity it appears to lock the skills when the Eternity proc triggers with less than 1 second left.
Not sure that helps any.
Same issue with Belgo relic proc, tested it on my BM just now. No issues with other relics, somehow the cooldown effects break skills from being used at all.
I’ve encountered a bug where some of my skills gradually become unusable during combat.
This might be related to the relic Belgothian’s Carnage, as the issue seems to occur when it’s equipped.
That occurred with below:
_Esther.zip (613.3 KB)
It is 10char
I didn’t notice this thread and posted separately, but it got merged here.
I was going to report the same skill issue you already pointed out 
