Bug: testufo dot com broken for some user agent strings

[fred2]

I am using Chromium Embedded Framework in my app, and customizing the `user_agent_product` field; my complete user agent is:

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Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) OpenKneeboard/1.9.13.0 Chromium/132.0.0.0 Safari/537.36

... where `OpenKneeboard/1.9.13.0` is my app.

This leads to:

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(index):176 Uncaught TypeError: Cannot read properties of null (reading '1')
    at detectBrowser ((index):176:3278)
    at (index):176:5048
 

If I use CEF's user-agent unaltered, the site works fine

By 'broken' I mean the animation is not displayed; the fps, refresh rate, pixels per frame, per sec are all blank or `-`, and the area above where the animations should be is just showing the background color.