IMAP problem after search

Using IMAP with GMAIL account.

I performed a search to find a specific email within Postbox. I opened the email and then cleared the search results.

I then with no search filters applied, viewed my inbox and more messages came in.

I then clicked on the first message in the inbox, and it opened in a new window in Postbox.

The message contained the correct subject line, however the body of the message contained the text from the email I double-clicked in my last search.

I could not make this condition finish without restarting Postbox.