The PR is a version of https://github.com/jquery/jquery/pull/4471 for Sizzle which will be needed to fix it for jQuery 3.x (jQuery 4 doesn't use Sizzle anymore so the fix was in jQuery itself).
IE/Edge sometimes crash when comparing documents between frames using the strict
equality operator (=== & !==). Funnily enough, shallow comparisons
(== & !=) work without crashing.
The PR is a version of https://github.com/jquery/jquery/pull/4471 for Sizzle which will be needed to fix it for jQuery 3.x (jQuery 4 doesn't use Sizzle anymore so the fix was in jQuery itself).
IE/Edge sometimes crash when comparing documents between frames using the strict equality operator (
===&!==). Funnily enough, shallow comparisons (==&!=) work without crashing.Fixes jquery/jquery#4441 Closes jquery/jquery#4471