Page crash when CSS mask-image uses Custom Properties

Fixed Issue #15415089


Serhii K.
Jan 11, 2018
This issue is public.
Found in
  • Microsoft Edge
Found in build #
Fixed in build #
Reported by 3 people

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Steps to reproduce

When a site’s CSS has a mask-image that uses a Custom Property such as:

div {
  --mask: initial;
  mask-image: var(--mask);

The page won’t load and displays the message “This page is having a problem loading.”


Possibly related to clip-path issue


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    Comments and activity

    • Microsoft Edge Team

      Changed Status to “Confirmed”

    • Thank you for your report! I assume this currently only reproduces in inside builds, correct? I’ll redirect you to the appropriate team, and they will take it from there.

    • Microsoft Edge Team

      Changed Assigned To to “wptcomptri”

    • It can be seen on latest external Edge release too.

    • Microsoft Edge Team

      Changed Status from “Confirmed”

      Changed Status to “Confirmed”

      Changed Assigned To from “wptcomptri” to “Olga G.”

      Changed Assigned To from “Olga G.” to “Rick J.”

      Changed Status from “Confirmed” to “Fixed”

    • Hello,

      Thank you for providing this information about the issue. We are pleased to report this feature is fixed in Edge 17133 and is available in our Insider Preview build on the fast ring.

      Best Wishes,
      The MS Edge Team

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