Bug 225960

Summary:	cave.town - partial rendering of the page for WKWebView browsers
Product:	WebKit	Reporter:	karl <karl+webkit>
Component:	Layout and Rendering	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	bfulgham, simon.fraser, webkit-bug-importer, zalan
Priority:	P2	Keywords:	BrowserCompat, InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified
URL:	https://www.cave.town/products/685404-are-you-tired-of-me-yet-long-sleeve

Description karl 2021-05-18 23:23:49 PDT

Steps to reproduce

1. With Firefox on iOS
2. Go to https://www.cave.town/products/685404-are-you-tired-of-me-yet-long-sleeve
3.  Tap any of the six button for size (S, M, L, etc.) 

Expected:
Page shows selection of the size

Actual:
black rectangles flash back and forth on the left and right halves of the screen for a few seconds.

This was reported as a webcompat bug.
https://github.com/webcompat/web-bugs/issues/72514

It reproduces on Chrome iOS and Firefox iOS
It doesn't reproduce on Safari iOS.

Comment 1 Radar WebKit Bug Importer 2021-05-19 09:22:02 PDT

<rdar://problem/78208897>