All my golds reset..
went to do my Welsh practice this morning, and ALL my previous lessons have reset from gold back to coloured at the same time. Is this supposed to happen ? (I didn't initially complete them all on the same day, or even in the same week !)
Ah, just read a message at the top of the tree saying that they have updated the tree to teach Welsh more effectively. So presumably we will have to regild all those skills.
The tree was updated. This means the skills will have new or different content, and thereby they tend to no longer be golden. You have more to learn!
As psionpete has already mentioned above--the Welsh tree has been updated and a message should appear at the top of the tree regarding it.