Fira Sans & Mono in bold have higher default line height?

[DivineDominion]

I'm using Fira fonts everywhere and so during app development on my Mac I also used Fira Mono for a in-development text editor. Then I noticed that if you embolden a part of the text, the whole baseline drops by a fair percentage of the previous line height.

Looking at the font preview directly, you can see what I mean easily, too:

Some other fonts do the same, but a lot on my machine do not appear to need more space above the top of a glyph.

Is this intentional? If so, why? It is rather odd to have the baseline affected like this and makes the font less useful in editors that do not enforce a certain setting. (Just notices the standard macOS TextEdit.app is affected, too.)

(Fira Mono v3.206)

[carrois]

Changing Vertical Metrics will affect all other users and use cases as well and we don’t have a solution here.