Apparently font developers have to deploy work-arounds to get super families to work correctly under Windows. The OS still acts as if type families only have regular, italic, bold and bold-italic weights. But it's also possible Windows itself could be a source of trouble. In the case of CorelDRAW 2020 it's likely a bug in that program with how it reads font naming tables. But the previous versions of CorelDRAW saw all 60 weights correctly. In the Character panel, set your Language to any of the new languages: Thai, Burmese, Lao, Sinhalese, or Khmer. OpenType fonts purchased online from Adobe will be in the location you. Navigate to the folder that contains the fonts you want to install. In the Fonts window, select the File menu, and choose Install New Font. Select South East Asian Options or Show Indic Options. Then double-click on the Control Panels icon, and then the Fonts icon. CorelDRAW 2020 won't see any of the 5 bold upright widths of Vito and shifts them all to Italic. To create a new document using one of the supported languages: Choose Edit > Preferences > Type. I ran into a similar problem with "Vito" a 60 font super family by Dots&Stripes Type. Sica works properly with the latest version of AI. A previous version of Illustrator wouldn't recognize all 36 weights of "Sica," a large type family from dooType, but other applications I use see all of the font files. I've had issues with a couple of type families in a couple different graphics applications on my desktop PC.
What typeface is it? Is it just one font file or a family of multiple font files? Have you tried re-booting the computer? Was the font file installed straight into the Windows Fonts folder or through a 3rd party font manager?