Just tried again (after updating chrome), did the same but found out it works in landscape but not portrait for dual view (didn't try landscape before updated lol!)
Thinking back, did the old site warn about "best viewed in landscape on mobile ?" Maybe need to reinstate that for fools like me :-)
Portrait should default to a single street view, so no need for a message :) But it shouldn't show a black screen.
Single view works fine for both BTC/BCH
