Formerly, I could copy text from Missive, paste into a plaintext field, and have linebreaks preserved. Now, they're only preserved if I paste into a richtext field; text becomes one big run-on paragraph if I paste into a plaintext field.
Before I would:
  1. Copy from Missive (an email or a Response).
  2. Paste into a plaintext field (such as in AutoTask, which only accepts plaintext).
Now, if I wish the same result I have to do something like:
  1. Copy text from Missive.
  2. Open a draft in Gmail to get a richtext field.
  3. Paste.
  4. Copy from Gmail draft.
  5. Discard draft.
  6. Paste into a plaintext field (such as in AutoTask).