SVG OTF fonts are problematic, but really nice with all the extra texture.. so I am on the latest FontExpert 2019 version and have a couple of SVG fonts (like Avallon SVG.otf and SummerLovingSVG.otf) not showing, appear as white box.
AlmonteSVG-Regular.otf on the other hand is showing and has a preview.. [ but is crashing Indesign 2019 ]
Its most likely a Win10 issue? (I am on Win 10 Enterprise 1903)
I do not think it as issue of Windows 10, but it is probably a compatibility issue between SVG font, its format, and the software that uses the font. I do not have any of the fonts you mentioned, unfortunately, but I have found two SVG fonts (free for personal usage), Abelone and Playbox, both are OpenType/CFF fonts having SVG table. Both fonts are displayed in FontExpert as black and white preview (Windows 10 Pro 1809).
Thanks for the answer. And I guess you are right. Some fonts are OK with previews but some don´t show. But these fonts also don´t show in the Win 10 Font-Preview (if you double click in the Windows Explorer)
I tried several combinations (Win 10, Win 7, FontExpert14, FontExpert19) but same result.
If I enable SummerLovingSVG.otf I can use it in Indesign/Illustrator, but still no previews. But the font is also in a "solid" none-svg version (with preview) available and I guess that was stuck in my memory.
Not sure how the development for SVG Otf fonts will continue, but I really like them.
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