Created attachment 464792 [details]
We recently made it possible to get the computed style for stroke-dasharray on non-SVG elements with bug 249813. However, it's not always right since it returns 0px for a 10em value, as shown in the attached test.
This affects the WPT tests web-animations/responsive/strokeDasharray.html: https://wpt.fyi/results/web-animations/responsive/strokeDasharray.html.
*** This bug has been marked as a duplicate of bug 204826 ***