Infinality and Qt 5.9x - fonts looking "watered down"?

[RJVB]

Hi,

Did anyone notice any changes in font rendering quality after upgrading to Qt 5.9x, with Infinality+Ultimate installed?

I did, certain fonts (among which Novarese BQ) looked significantly "watered down" (on a system with Freetype 2.6.5 as well as one with Freetype 2.7.1). Upon verification with Qt,

OpenType CEF fonts are now stem-darkening and rendered gamma-corrected

which probably explains what I'm seeing. This could simply be a bug in Qt or the fonts in question, but could it also be an interaction with the Freetype Infinality and accompanying FontConfig patches?

I did find a fix for Qt so let me know if you're concerned by this too.

[RJVB]

Screenshots here:
https://bugreports.qt.io/browse/QTBUG-65468