Trade site Direct Message sending message for an unrelated item

Repro steps:

1) On trade site, use bulk tab to look up Heterochromia.
2) Find some potential sellers, and click Direct Message.

Actual Result:
The message in game links Rain Tempter.

Expected Result:
The message in game links Heterochromia.

Reproduction rate:
3 out of the 5 sellers I tried.

Additional information:
- Having spotted this listing for my own account while trying to buy the card (and knowing I do not have a Heterochromia listed), I clicked direct message and saw this behaviour, so can confirm that the seller need not have a Heterochromia listed for sale. I did have a Rain Tempter listed, though.