I’ve made a color font for a client. I got a bug report for the OpenType SVG version: it renders correctly in InDesign, but when exporting a PDF from the InDesign document, the two color areas are out of sync, with unintended white gaps between the colors.
In Illustrator it works fine, including PDF export.
I’m testing with InDesign 21.2, exporting with PDF/X-4.
Don’t know if I had the exact same bug, but I noticed export to PDF from Indesign works better in OTF-CFF than OTF-TTF. Which somehow doesn’t surprise me so far.
The ttf version was also exporting better when “export COLR table” was explicitly unchecked.
I just needed to include the “Export COLR Table” parameter (in Font Info → Exports) and uncheck it. Apart from that, I just followed the Glyphs tutorial for OpenType SVG fonts.