\sqrt is rendered semi-invisible when Firefox is configured with custom colors (while High Contrast theme is set on Windows OS)

Created by: oldtimer2020

(UPDATE) Math renderer: chtml (svg renders correctly) (UPDATE) Windows 10 theme: any High Contrast theme (used for accessibility feature) Mathjax: 3.1.0 Browser: Firefox 80.0.1 Browser colors: (Text: white; Background: black) Expression: (\sqrt[3]{4})

Numbers inside the square brackets (indices) are rendered invisible.