Bug 198334 - SVG random lines appearing and legit lines disappearing while panning
Summary: SVG random lines appearing and legit lines disappearing while panning
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: SVG (show other bugs)
Version: Safari 12
Hardware: All All
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2019-05-29 08:33 PDT by y.chen5
Modified: 2019-05-29 13:58 PDT (History)
5 users (show)

See Also:

Attachments
full example + video (42.16 MB, application/x-zip-compressed)
2019-05-29 08:33 PDT, y.chen5 		no flags Details
SVG file (97.77 KB, image/svg+xml)
2019-05-29 13:55 PDT, Said Abou-Hallawa 		no flags Details
View All Add an attachment (proposed patch, testcase, etc.)

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Description y.chen5 2019-05-29 08:33:57 PDT 
Created attachment 370852 [details]
full example + video

Lines not defined in SVG will appear and disappear randomly when panning around.
Lines defined in SVG might disappear randomly when panning around.

Video: https://youtu.be/BqlItab0k_g

No fancy SVG feature like script or media query. The only elements used are text/path

Live exaple: https://codepen.io/alt22247/pen/vwzBmL

Can't reproduce this with small files. The larger the file the worst this gets.
Comment 1 Alexey Proskuryakov 2019-05-29 13:42:42 PDT 
I can reproduce. Looks like lines that span tiles sometimes draw wrong.
Comment 2 Radar WebKit Bug Importer 2019-05-29 13:43:04 PDT 
<rdar://problem/51234986>
Comment 3 Said Abou-Hallawa 2019-05-29 13:55:06 PDT 
Created attachment 370882 [details]
SVG file
Comment 4 Simon Fraser (smfr) 2019-05-29 13:58:50 PDT 
This looks like a bug in a framework below WebKit.