Hi,
It’s rather not a bug, but the lack of the docs (we’re working on it) - these are object-like tokens, you can use them, but you have to set the field name this way:
%request.title%
%offer.price%
%listing.location%
Then they will be replaced properly. Thanks, we’ll consider making admin-specific emails editable, in the current version you can also customize them using Loco Translate.