This looks very much as if the font renderer is aggressively hinting to the pixel grid vertically, but not horizontally. That’s a known trick for getting a decent compromise between crisp text (along the baselines and tops of letters) with subpixel horizontal kerning.
I doubt the Android renderer is really broken and no-one has noticed until now, so I’d guess the font either has bad hinting, or more likely it’s just being displayed at an awkward size and vertical positions are being rounded in an awkward way. You can see the slight deviations from the baseline in the iOS screenshots, it’s just much more subtle as it isn’t being hinted.
I doubt the Android renderer is really broken and no-one has noticed until now, so I’d guess the font either has bad hinting, or more likely it’s just being displayed at an awkward size and vertical positions are being rounded in an awkward way. You can see the slight deviations from the baseline in the iOS screenshots, it’s just much more subtle as it isn’t being hinted.
(Source: I contributed a little bit to font rendering in Urho3D, to fix some similar text aliasing glitches: https://github.com/urho3d/Urho3D/issues/1953)