Created attachment 464882 [details] Screenshot showing maps.jwestman.net in Epiphany Technology Preview In Epiphany Technology Preview, the map on maps.jwestman.net appears as a narrow band (as shown in screenshot). This is incorrect. The map should span the whole web view.
I confirmed it's reproducible with Safari and STP 158 on mac. But, it happens only the very fist time. Clearing the history and restarting the process make it highly reproducible. It seems to depend on resource load timings.
<rdar://problem/105432264>
This also happens in the 2.38.5 stable. An easy way to check this issue is running “epiphany -p https://maps.jwestman.net” to make Epiphany use a private instance with separate user data.