Glyph 6 in Roman VF does not adjust with 'wght' axis

[Lorp]

Glyph 6 (name = uni1EAE, tied to LATIN CAPITAL LETTER A WITH BREVE AND ACUTE' (U+1EAE)) stays always in the default axis location.

In the attached image we observe the glyph in question remaining at default (light) when other glyphs are correctly getting heavier. We see the same behaviour with Samsa rendering (main glyph) and native Apple rendering (Webfont panel).

Note: The lack of acute in the image is not an issue, as it is cropped.