TTFs from Glyphs3 not working in older Firefox

Glyphs
1

Since Glyphs 3, the TTFs don’t render in my old Firefox (44.0.2)/Win10 any more.
Turns out it’s because of overlap=1 flag in the GLYF table (left: TTF from Glyphs 2):

Bildschirmfoto 2022-04-01 um 14.51.28
Bildschirmfoto 2022-04-01 um 14.51.282224×696 242 KB

As soon as I delete those flags + GSUB and GPOS tables, the fonts render again.
Could you remove this from the static fonts?

2

That is fixed already. The update will be published very soon.

(I wonder why someone might use an old version of Firefox. Isn’t that dangerous?)

3

Thank you, Georg! I just like the idea of backwards compatibility, as long as there’s no good reason that speaks against it.