My oslashacute glyph is composed of three compatible components:
o
acutecomb.cap
oslash
It’s interpolated in 4 masters:
Light
Light Extended
Bold
Bold Extended
No matter what I do, the glyph is incompatible and will not be interpolated. There are no incompatible anchors, no component modification, or anything else of that matter.
That is supposed to be the Dark Mode color, gone a little wrong. It is fixed in the latest beta: Go to Glyphs > Preferences > Updates, activate both checkboxes and press the Update button.