>Is there any way to have 'Actual Size' be the default when viewing images? I've looked all through the settings and I don't see how.
ImageGlass "should" remember the last zoom state used. If installed fresh, the more recent versions of IG default to "Auto Zoom", which is basically "view 100% if smaller than the screen, otherwise zoom-to-fit". I can only guess that your "5.0" settings have the new version confused.
So in theory, if you set the zoom to "Actual Size" or "Auto Zoom" [via the toolbar or Zoom menu], that becomes the new "default". If that isn't working, then I suggest you rename or delete your igconfig.xml file and let ImageGlass start over with fresh settings. If _that_ doesn't work, let us know so we can dig further.
The
docs might help you find your igconfig.xml file.