[Webkit-unassigned] [Bug 166818] ASSERTION FAILED: Updating the fieldset on validity change is not an efficient operation, it should only be done when necessary. m_invalidDescendants.contains(&formControlElement) in WebCore::HTMLFieldSetElement::removeInvalidDescendant

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=166818

--- Comment #1 from Renata Hodovan <hodovan at inf.u-szeged.hu> ---
Created attachment 298308
  --> https://bugs.webkit.org/attachment.cgi?id=298308&action=review
Test

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