https://bugzilla.redhat.com/show_bug.cgi?id=1336042
--- Comment #40 from Nikolaus Waxweiler madigens@gmail.com --- Got it. The problem is that the build provided on https://github.com/liberationfonts/liberation-fonts/releases has the fsSelection bit 7 (USE_TYPO_METRICS) turned on (see https://docs.microsoft.com/en-us/typography/opentype/spec/os2#fsselection), which modifies how applications calculate vertical metrics. Turning it of in a TTX dump and re-TTX-ing into a TTF makes the vertical metrics the same as Arial.