Issues with Constructible Buildings
Using construction materials from the gift box toward the completion of a constructible building, such as the Japanese Barn, initially appears to work, but rolls back without redemption of the gift materials to the gift box.
This issue has been validated and is being investigated by the development team now.
There are no proven workarounds for this issue to date. It is advised that you avoid adding new materials toward your constructible buildings until this bug is resolved.
If you find your issue in this section, please refrain from creating additional threads unless otherwise specified in the description of the Bugs listed above.
Many FarmVille Freaks, myself included, have reported losing supplies when constructing their Japanese Barn building. After accepting Japanese building supplies that are sent as free gifts from your FarmVille neighbors, the supplies can be found in your Gift Box. However, after choosing to use the supplies for your Japanese Barn, a further investigation shows that the supplies have not counted!
Not only is this frustrating because of the loss of time expended accepting gifts that do not count, you will still have to complete the building process by accepting more gifts.
According to Zynga the bug is triggered when you consecutively place 6 or more buildings supplies to use in your constructable building. For now, they are advising that you place only a limited amount of supplies consecutively, suggesting less than 6 supplies in one session, until the bug is fixed.
Perhaps, as a courtesy to angry farmers Zynga will increase the number of supplies that you are able to send at one time.
Zynga's FarmVille Community Manager, Grimwell, released the following statement:
There have been many reports of issues with constructable buildings, such as the new Japanese Barn, where people use materials in their gift box, see the building update and advance, but then find that the update is gone and the materials are no longer in their gift box upon returning to the game.
The team is looking into the issue and will release a fix to prevent this from happening once they have it. We will post an update when that release happens so you know that things should be back to normal.
We do know that the missing materials bug seems to trigger when you place more than five new materials in a building. Until the fix is in you may want to avoid placing six or more new materials from your gift box into a building in a session." (Source: Official FarmVille Forum)
This article originally appeared on FarmVille Freak.