Problem generating Feature Variations (.notdef) (3208)

I have a weird problem at export with this file.
notdef BUG.glyphs.zip (140.2 KB)

When I set the Variable Font Origin to “Regular” I get this error :

Problem generating Feature Variations
In glyph: .notdef: Master is outside of the interpolation space at 50 and axis rage: 90–90

Light, Regular, Medium and Bold masters have been generated from instances.
This issue don’t occur in last stable version.

I had fixed that a few days ago. Will upload a new version, soon.

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The error is gone, but if Variable Font Origin is set to “Regular”, interpolation go crazy (glyphs scale randomly, like if the designspace was not correctly set).

EDIT : In fact, no matter which master is selected as the origin, the inperlotion is broken