Overpass font not correctly aligned

[JosuaMeier]

Describe the bug
In version 4.0.0 the overpass font is not vertically aligned center.

Here is the correct version 3.0.5:

To Reproduce
https://jsbin.com/gotevucaku/edit?html,css,output

Correct with version 3.0.5 version:
https://jsbin.com/niwevodahe/1/edit?html,css,output

Expected behavior
Font should be vertically center aligned. (worked in version 3.x)

Additional context
Mac, Chrome

[JosuaMeier]

Any updates here?

[RosaWagner]

Hi @JosuaMeier, thanks for the report. Unfortunately we won't be able to fix that cause it would break websites served with this font. More info here: https://googlefonts.github.io/gf-guide/onboarding#font-upgrades

[chrissimpkins]

We're going to have a look at the diffenator comparisons between what the Red Hat team have in their main branch and what we ship to understand the impact on line spacing in order to achieve the improved vertical alignment with e.g., icons. We'll decide if this is an acceptable change relative to our current production release.

[tarjep]

What is the status on this? This misalignment is really annoying.

[thlinard]

Issue upstream: RedHatOfficial/Overpass#91 (no new commit since September 10, 2021).

[thlinard]

Btw, in version 4, typoDescender and hheaDescender have been set to -756, which is equal to the value of yMin. This value is the value of ‎| 007C VERTICAL LINE, and even though this matches what is done in the first example of Google Fonts documentation | Vertical metrics, it was not relevant to do so in this case.

The conversion of old values (Overpass Heavy v3.0.5: yMin= -378, hheaLineGap = 266, typoDescender= -250 and hheaDescender= -284, Use_Typo_Metrics enabled in fsSelection) ​​​​that was done when switching to variable format would deserve to be reviewed.