Tested in both MOP Remix and regular non remix characters. When you use a healthstone the cooldown never starts regardless of combat status. The tooltip still shows the “Cooldown Starts Upon Leaving Combat” message and using it gives the “item is not yet ready” message. Destroying the healthstone and then making a new one also does not start the cooldown or make it useable so far only logging in and out seems to resolve it.
I had the same thing happen as well. I also did what you did and destroyed the Healthstone, made another, but still couldn’t use it. Dying reset the cooldown immediately though. 
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yeah im getting this too. it seems to best way to avoid this bug is not using one and just accepting my fate of death.
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I just noticed this issue while using my warlock today.
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I haven’t been able to use a healthstone either, same issues as Thazrel. Hopefully this will be fixed Tues, when the game is down once again, for a half day?!
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I have been having the exact same problem since the most recent patch.
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I am having this problem as well, on both Warlocks in and out of Remix, relogging is the only way to fix the issue.
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Same issue here. This patch is full of bugs.
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This issue is still on-going.
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Still happening!
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Not the only way, death also resets the cooldown too.
Don’t ask how I know… 
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Still not working.
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And still not working, in fact, I had used in one fight, finished the kill and moved to a totally different area. Got into another fight with a rare elite, was down to whoever had the last shot, went to pop my healthstone and it was still greyed out. I did die, but at least my healthstone stared to cool-down. Still that sux that you have to either die or log out in order for your healthstone to cool-down. Not helpful at all in a dungeon or raid, not to mention it pisses some people off.
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still not fixed, this many days later
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Yup. Same issue happening for me, hence me finding this thread! HALP!
are they ever going to fix this lol
I went to my Warlock talent tree and found the Demonic Healthstone…it works just like the regular healthstone. But the Demonic Healthstone needs to be picked on the Talent Tree (Warlock) It’s at the bottom of the “Warlock” tree. I had to change a few talents to get the Demonic Healthstone to become available to pick. It was in my bag after choosing it. Clicked on it which gave me 3 uses. Works just like the regular one in or out of combat. 1 min. cooldown. I tested it. This is for my Warlock.
Same here, any AT on fix??
Came here to say the same. This has been happening since 2020.
The only solution I’ve found is to log out and back in.
Same for me with healthstones on my lock. I noticed too if you delete the healthstone from your inventory the space it was in blacks out like there’s still something there and it won’t let me use it until a relog. Reload never seems to be enough.
1 Like