Bug 218299

Summary:	Incorrect calc percent values in SVG
Product:	WebKit	Reporter:	Zach Bjornson <zbbjornson>
Component:	SVG	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	ahmad.saleem792, ap, bfulgham, koivisto, maggotfish, simon.fraser, webkit-bug-importer, zalan, zimmermann
Priority:	P2	Keywords:	BrowserCompat, InRadar, LayerBasedSVGEngine
Version:	Safari 13
Hardware:	Unspecified
OS:	Unspecified

Description Zach Bjornson 2020-10-28 11:31:39 PDT

https://jsfiddle.net/u4kp7jLx/2/

In this example, the two circles differ only in the value of --t1:
  --t1: calc(100% - 4px); /* bug */
  --t1: calc(100px - 4px); /* okay */

That's applied to an SVG element with width=100 height=100, so 100% == 100px.

This works correctly in Firefox and Chrome.

(Safari 13.1.2)

Comment 1 Radar WebKit Bug Importer 2020-10-28 19:23:22 PDT

<rdar://problem/70791325>

Comment 2 Ahmad Saleem 2022-08-29 04:19:02 PDT

I am able to reproduce this bug in Safari Technology Preview 152 on macOS 12.5.1 using test case from Comment 0.

*** Safari Technology Preview 151 ***

First box - Full Blue Circle inside <<<---------- BUG
Second box - Semi blue circle

*** Firefox Nightly 106 & Chrome Canary 107 ***

Both boxes - Semi blue circle

_____________

Just wanted to share updated testing results. Thanks!