ie8 fix for html5mode route

[LorDOniX]

This is my fix for IE8 router problem - #6832 (issue is described here).

[mary-poppins]

Thanks for the PR! Please check the items below to help us merge this faster. See the contributing docs for more information.

• Uses the issue template (#6834)

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Then, update the pull request with git push -f.

Thanks again for your help!

[mary-poppins]

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[LorDOniX]

Thank you for your reply, I've already signed CLA signature.

[caitp]

I think #6899 probably fixes these issues, but I'm not positive. I'm going to close them with it, but you're welcome to re-open if they don't.