regression in css content on safari

[RTFaught]

An issue with css content on safari was fixed by #1649. This problem now occurs in 1.0.0-rc.3
See fiddle https://jsfiddle.net/RTFaught/71jns2px/

The content string is not shown on the rendered canvas.

This failure is only on Safari on both MacOS and IOS. Both Chrome and Firefox work correctly on MacOS and elsewhere.

The original pull request says that this problem is caused by Safari not passing content in double quotes. I thought it interesting that changing the CSS line in the fiddle from
content: "AB";
to
content: '"AB"';
shows the content but surrounded by double quotes.

Specifications:

• html2canvas version tested with: 1.0.0-rc.3
• Browser & version: Safari 12.1.1 on MacOS 10.14.5 and Safari on IPad IOS 12.4
• Operating system:

[RTFaught]

Perhaps this is not a regression. I cannot find a release that contains the earlier fix.