Oh look, it's a dain.

[nablator]

Given the various styles and hands in written text and the common potential to see the symbols as part of a familiar alphabet, the French words are clear enough in Febus and above. And in the VMs text, you don't need EVA to tell you that the VMs 'd' looks like a valid medieval 'd'. That is why "the folks at EVA" decided to call it a 'd'. At least that's the story I've heard.

The '8' shape is unusual for 'd'. In this Ms. fr. 169 there is one almost-8 shape on f. 9r and I don't know if there is any other. There are two common glyphs for 'd' (the choice seems random), one is like a mirrored '6', one with an upper loop and an open lower loop.

You have a better match with the lopsided d in some 'cl' written in some styles of Cursiva, and with all other Voynichese glyphs as well, especially those with "plumes" looking like abbreviations. Bastarda is definitely not a good match for any Voynichese glyph.