Problem with stroked corner component for VF


I’m having trouble with a stroked path featuring a corner component when exported as a variable font.

Left is Glyphs looking good and right is variable font export as seen in Font Goggle and Illustrator:

I’m Using Glyphs 3 3.1.2 (3151)

The issue is only with variable font export. Regular exports work as expected.

Very much hoping to avoid having to decompose corners across my entire font file.

I can’t upload the glyphs file here as a new user. But here’s a link to the Glyphs file and variable export if it helps:

Many thanks.

Does it work in 3.2?

I’ve shied away from cutting edge versions in the past but gave it a go and it works. Thanks!