Missing viewport in cardboard.jar 0.5.4

[neph1]

Using 0.5.4 of Google Cardboard seems to cut out one of the viewports.
It's briefly visible before disappearing.
If created as a "pre view", the right viewport is lost. If instead created as a "post view", the left viewport disappears.
Workaround: Use 0.5.3

[neph1]

Fixed in 0.5.5