It is possible for users of both the new Gmail version and the Tab Mix Plus extension for Firefox to have problems downloading attachments. When clicking the “Download” link, the Gmail tab is blanked, and can only be restored by reloading. Tab Mix Plus developers are working on a fix.
In the mean time, there are three possible workarounds:
- Go into Tab Mix Plus settings -> Prevent blank tabs when downloading files -> EDIT and remove the entries /disp=attd&view=att/ and /view=att&disp=attd/ from the list.
- Lock the Gmail tab.
- Middle-click or Ctrl+click on the link.