"Restore Down" should have x-direction scrolling or resize appropriately.
In web browsers on Windows, the Restore Down function (makes page smaller or allows page to be snapped to either side of the screen, causes only the list of emails to show, not allowing the full email to be visible because it's cut-off. A side-scrolling function would be able to fix this problem easily, but currently there is none.
Chad Irvine commented
This. I use snapping a lot and can't see anything and have to keep switching tabs and windows which gets time consuming. it's annoying.