Browsers scroll view slightly when opening "reply to" popup

Okay, things look kinda bad when both upward and downward expansion are involved. (example post, and the one above)

This is an issue currently as well, though.

I think that upward expansion needs to be fixed in a sense that it looks like downward does currently, i.e. it should be inserted in a way that makes:

  1. The wide line appear above the in-reply-to and post rows
  2. The narrow line appear between the in-reply-to and post rows
  3. No double lines anywhere.

Fixing the scroll issue then becomes an afterthought.