Erratic embeddability / Vendor ID specification

[DIV-on-github]

The embeddability of the fonts in this family is inconsistent.
I cannot see where this property is specified in any of the source files, but I notice that the Vendor ID is not specified for several of the fonts within the family, and those two issues seem to coincide precisely for every single one of the fonts.

zilla-slab/sources/ZillaSlab-Regular.ufo/fontinfo.plist

Lines 139 to 140 in 0a6fdf0

	<key>openTypeOS2VendorID</key>
	<string>TPTQ</string>

With respect to version 1.002 (OTF files)

• Light: print & preview; Vendor ID not specified (licence agreement and licence URL also missing!)
• Light italic: print & preview; Vendor ID not specified
• Regular: installable; Vendor ID specified
• Regular italic: installable; Vendor ID specified
• Medium: print & preview; Vendor ID not specified
• Medium italic: print & preview; Vendor ID not specified
• SemiBold: print & preview; Vendor ID not specified
• SemiBold italic: print & preview; Vendor ID not specified
• Bold: installable; Vendor ID specified
• Bold italic: print & preview; Vendor ID not specified

and

• Highlight regular: editable; Vendor ID specified
• Highlight bold: print & preview; Vendor ID not specified

[DIV-on-github]

Screenshots illustrating issue.

Windows' Font Viewer (see bottom-right corner)

High-Logic's FontCreator (see middle)

[DIV-on-github]

Relevant posts on other fora:

• https://forum.tracker-software.com/viewtopic.php?p=169743
• https://www.reddit.com/r/fonts/comments/13ybzah/technical_issue_with_zilla_slab_font_family_otf/
• https://forum.high-logic.com/viewtopic.php?p=48735

[DIV-on-github]

Issue in Word.

(I hadn't seen the message in this screenshot before, but it is nevertheless symptomatic of the abovementioned issue.)