This might have happened due to a dependency update concerning GTK, as far as I am concerned.
I am using Arch Linux with KDE Plasma + the AUR version of Tixati (
https://aur.archlinux.org/packages/tixati ), the same thing happened to me.
As Tixati is part of the AUR (Arch User Repositories), rather than the official ones, I'm curious on how this will be fixed.