This might not be a real bug, just something that caught my eye as a bit strange. I play on Iphone if that matters in anyway, i guess it doesn't.
When requesting help on building/research this example text shows in the alliance-chat:
(As a speachbubble) "You have requested Help on level 5 Smelting!"
Then I get help:
(speechbubble) "playername Helped you with level Smelting 4. (4/10)"
I would say it should be "playername Helped you with Smelting level 5." (in this case)
Just a thought.
Thanks for a great game.