Referenced in #1991684: Node history markers (comment & node "new" indicator, "x new comments" links) forces render caching to be per user.

IE8 does not support this method of Object: http://kangax.github.io/es5-compat-table/#Object.keys

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jessebeach’s picture

jessebeach CreditAttribution: jessebeach commented
Status: Active » Closed (duplicate)

This is addressed by #2061535: Include an ES5 polyfill library.