FF113: Curvy tabs completely garbled

[CO-Windler]

I am using CustomCSSforFx for a Vista-like style that I combined with "photon-australis" (colours slightly edited) for curvy tabs. Since Firefox 113 on Linux Mint with KDE Plasma 5.18.8 the curved tabs now look completely garbled; the upper row with text and close button is drawn too high and halfway disappears, while the tab itself (except the right curved rim) is missing. Please fix this.

[Orriky]

Replace all instances of display: -moz-box with display: flex
and -moz-box-orient: horizontal with flex-direction: row

[CO-Windler]

Thanks! It works again.

[Impakt]

they're better but not perfect