I’ve gone back to publish a Facebook Instant game for release, and, for some reason, now the canvas is stretched (it’s too tall and the black bar at the top covers part of the game) on Android. On Facebook web it’s not stretched.
Reverting to the debug version of the game works and the game isn’t stretched on Android (there have been no Lua code changes in the game at all).
I’ve tested with an the latest unedited Facebook Instant HTML template, and it’s also stretched. I’ve gone through all options; Fb Instant Stretch Canvas true/false and all HTML5 Scale Modes.