As I understand it, we were no longer supposed to get Mystery Tonics in Black Lion Chests. I got a few keys this weekend via purchased gems and got tonics in a chest. After submitting a ticket, I was told that they could not replace those with something that should have been in the chest.
Please approach opening chests with caution until they sort this bug out. It’s a shame to get have a quarter of what you’re getting be completely useless (imo)
The patch notes didn’t say Mystery Tonics had been removed, rather they had been greatly reduced. Which means you can still receive them in the BLTC chests.
‘Mystery Tonic drops have been greatly reduced.’
https://forum-en.gw2archive.eu/forum/info/updates/Game-Update-Notes-June-03-2014/first#post4088247
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