Accroding to gtk versioning style, we usually use even minor (stable) versions.
libsigc++3 : Latestglibmm : Latestcairomm : Latestpangomm : Latestlibsigc++2 : Latestglibmm-gtk3 : 2.66.6 (API 2.4)cairomm-gtk3 : 1.14.5 (API 1.0)pangomm-gtk3 : 2.46.3 (API 1.4)atkmm (no longer needed in GTK4): 2.28.3 (API 1.6)gtkmm3 : LatestKnown issue: bad renders on virtio-gpu of qemu.
Solution: GSK_RENDERER=cairo.