Comment 1 for bug 58215

I also experienced this, but it's not exactly as you say; I think I narrowed down the inconsistencies... here's what I found:

Copying from the "reply-to:" field and pasting works anywhere and you can paste as many times as you like.

Copying from the "to:", "cc:", and "bcc:" fields only paste _once_ back in to their own field, and no where else. If you try to paste somewhere else with the middle button, it won't do anything, and won't let you paste the clipboard data anymore - it's like it's been erased, yet it hasn't because the keyboard and menu commands always work.

Copying from the "subject:" and "post-to:" fields allow infinite pasting outside of the subject field, but once you paste in the "subject:" field, it won't paste anymore, anywhere. I.e. pasting only works once within the subject field like the "to:" field except you can paste elseware.

All the above work as expected (infinite pastes anywhere) using CTRL+C and CTRL+V. The problem is only with the middle mouse button, and there are definitely inconsistencies between the above fields in evolution and other applications.

Can you confirm all of these Jim? Can anyone else please so we can set this bug to confirmed. Cheers.