[Webkit-unassigned] [Bug 177684] New: Cannot unset transition with important

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=177684

            Bug ID: 177684
           Summary: Cannot unset transition with important
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jridgewell at google.com

Created attachment 322231

  --> https://bugs.webkit.org/attachment.cgi?id=322231&action=review

unset transition important breaks

Setting `transition: none !important` (or any valid transition value) using inline styles (CSSStyleDeclaration#setProperty) prevents directly unsetting the style (`el.style.transition = ''`).

A workaround is to set a valid non-important style first, then unset (`el.style.transition = 'none', el.style.transition = ''`)

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