Regression in 6.6.3: GTK3/GTK4 clients SIGABRT with "xcb_xlib_extra_reply_data_left" under muffin (Mint 22.3 Zena)

Regression in 6.6.3: GTK3/GTK4 clients SIGABRT with "xcb_xlib_extra_reply_data_left" under muffin (Mint 22.3 Zena) #469