It seems that raid end-boss Garrosh Hellscream has been up to his old tricks again, as players have been having a great deal of trouble with his loot table awarding insufficient tokens on 25-N difficulty. It seems that, instead of the usual three, Garrosh was only dropping one token, as Community Manager Lore reports:
When Patch 5.4 released, Garrosh Hellscream was set to drop one tier token on 25-player Normal difficulty. This was inconsistent with other bosses in the zone, and we planned to correct that via hotfix. Our intent was to release this hotfix during weekly maintenance to keep rewards consistent throughout this reset; unfortunately, due to an error on our part, the hotfix was applied early to the North American and Asian servers. This has resulted in an unfair advantage for guilds that defeated Garrosh later in the week, not only against the NA/Asian guilds that defeated him before the hotfix was applied, but also against all European guilds that have defeated him (as the hotfix has not yet been applied there)...
Fortunately, this only affects a small number of guilds, so we are able to correct the error. We'll be reaching out to all guilds who only received one token from a successful Garrosh kill this week and providing the Guildmaster with an extra two tokens at random, which can then be distributed to any raid members who were present at the time of the kill.
We sincerely apologize for any inconvenience or frustration that this has caused. Thanks for your understanding, and good luck in Heroic difficulty!
While there seems to have been an initial error, it certainly sounds like Blizzard has taken swift and decisive action to correct the wrongs of their error. So, it is likely that the hotfix will go live in the EU with their later reset, in time for Wednesday, and that EU guilds will be compensated accordingly. Tier items are a really important component of world first races, as even a tiny gear advantage can make a huge difference. If you were in a 25-N raid and too few tokens dropped, speak to your GM!