No issues before, upon installation of Mac OS Big Sur 11.0.1 the demi font weights don’t display with the latest version of Axure 9 - 9.0.0.3722
see video, where upon typing the font reverts automatically to regular weight from Demibold
In the previous version of Axure I was using 9.0.0.3701 the demi font weight works fine with OS Big Sur 11.0.1, just that the reported disappearing widgets issue is present. So the fix for the disappearing widgets has affected the demi font weight persisting.
A very poor workaround to use the demi font is to use the older Axure 9.0.0.3701 again. - as shown in the below video, but of course all my widgets disappear off the screen. (Can you revert the font change in the latest Axure Axure 9 - 9.0.0.3722 release?)