The new Windows installer displays itself with an HTML (or perhaps skinned) interface with hard-coded white background which does not adhere to the desktop GUI color scheme chosen by the user.

Many times this is only an aesthetic problem, but it may cause the window to be unreadable if the user is using a darker, custom color scheme, or one of the standard Accessible themes such as "High Contrast".  

Invariably the developer/framework sets only one out of two of the background/foreground pair, which I believe happened here.  See attached, the white text is lost on a white background.

Please set both the background/foreground to "system colors" to avoid this issue.  These are available in CSS as well, though not commonly known.