Email forward ends up in original topic

I can’t seem to reproduce this. These are my steps so far:

  • Set up CategoryA and CategoryB, and assign them email-in addresses (categorya@[MyTestSite] and categoryb@[MyTestSite])
  • Set test_user to Watching for both categories
  • Set email time window mins to 1 min (optional, but speeds things up)
  • Admin posts topic to CategoryA
  • Test_user receives notification email of new topic in CategoryA, and forwards it with message to CategoryB
  • New topic is created in CategoryB (with a very ugly title :slightly_smiling_face: - Fwd: [JammyDodger's Test Site] [categorya] Topic for Category A), but only includes the added message, and not the intended forwarded information

I can’t seem to replicate the issue where a forwarded email to a category ends up as a reply to an existing topic? Is there something extra I could try instead?