A bug or two for you, @jessegrosjean! This is in 3.1 (188).
Create an empty document, and add a project entitled “Inbox: @today”. Now try using Items > Format As to change it to a Task or a Note. The following things happen:
The last character of the “@today” tag is removed, and the colon remains present. Thus, if you tried to make the item into a Note, it’s actually still a Project due to the colon still being there.
The selection is strangely placed.
If you then Undo, two different odd behaviours happen. If you made it into a Task and then Undo, it becomes “Inbox: @toda:” (truncated tag, and additional colon). If you made it into a Note and then Undo, it becomes “Inbox: @toda” (truncated tag), and if you then Undo again, the insertion-point goes crazy and then the whole window goes into a flickering loop.