IE 9.0 Failing

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Property	Value
Session ID	01d737bf077bca4d8990b88850dd305f8137f0b3
Status	failed
Reason
Input Capabilities	os: Windows os_version: 7 browser: ie tunnelIdentifier: karma0.2734037011553796 browser_version: 9.0 url: http://localhost:9876/?id=56166409 browserstack.tunnel: true timeout: 300 name: Karma test build: 1094 action: create browserstack.video: false
Session URL	https://automate.browserstack.com/builds/8c2ef0a6ff93298eee72e3ca8f9ddf6c0cd9459a/sessions/01d737bf077bca4d8990b88850dd305f8137f0b3

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Seems to be coming from a dependancy

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Culprit seems to be the below from jQuery Terminal. Even if I add "px" after, scrolling seems to have problems. Given the low usage, I don't think it is worth supporting IE9.

refresh: function() {
    if (char_size.width !== 0) {
        self[0].style.setProperty('--char-width', char_size.width);
    }
    redraw({
        scroll: false,
        update: true
    });
    return self;
},