Roboto Flex: XOPQ axis not listed in Google Fonts

[graymatter00]

The XOPQ axis is not listed in the Variable Axes list for Roboto Flex on the Google Fonts website, however it does appear to be an available axis within the font.

To Reproduce
Go to https://fonts.google.com/specimen/Roboto+Flex/tester, scroll through the Variable Axes list. YOPQ is listed as Thin Stroke, but XOPQ is not in the list. However, if the font is downloaded and examined using the https://wakamaifondue.com/ website, the XOPQ axis is available and appears to function as expected.

Expected behavior
The XOPQ axis should be listed in the Variable Axes list for the Roboto Flex font on Goole Fonts.

Screenshots

From Google Fonts...

From wakamaifondue.com...

[RosaWagner]

Hi @graymatter00 this is true, thanks for reporting. We'll investigate.

note to team: METADATA.pb is listing XOPQ in this repo and in dev.

[graymatter00]

Possibly related?... googlefonts/roboto-flex#360

[RosaWagner]

Most possible! thanks for linking the issue.

[graymatter00]

Also possibly related?... googlefonts/roboto-flex#375