Actually, this is the correct behavior. The PRIMARY selection is only valid WHILE it is selected. If you select text, then left click, you've lost your primary selection, so a middle click will not do anything. While it is still selected, however, a middle click will work correctly. The reason that you can't paste FROM the To: field to another application, is that the To: field loses focus when the window loses focus, and therefore, it loses the primary selection as well.
Whether or not that, in and of itself, is a bug is probably an upstream question. (Note that I am not the package maintainer, I am just subscribed to bugs for the package.) -- Alex Malinovich Support Free Software, delete your Windows partition TODAY! Encrypted mail preferred. You can get my public key from any of the pgp.net keyservers. Key ID: A6D24837
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