JSONArrow icon being rendered with blue background in Edge

[davidkpiano]

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See here for details on the issue in Edge: https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/11844964/

This is affecting react-json-tree (somewhat inadvertently, sorry, not your fault!)

Here's where the unicode char is used: https://github.com/alexkuz/react-json-tree/blob/master/src/JSONArrow.js#L16

And the fix would be adding a rule such as font-family: 'Segoe UI Symbol', sans-serif to that icon's wrapper div.