Install GladeVCP on Raspberry Pi 4

If you already have glade installed, download the corresponding version from Linuxcnc -dev. Then in Glade in preferences add Extra catalog & Templste path , look for the Linuxcnc-dev gladevcp folder which is located in the path /lib/python/.   

Recently I happened to do a fresh install LinuxCNC, today I wanted to build a GUI but Glade suddenly looks very different... The version is 3.38.2, it seems that by default it is not possible anymore to use HAL widgets. Perhaps the above post from COFHAL relates to this?

I am not sure what is meant by "If you already have glade installed, download the corresponding version from Linuxcnc -dev.", maybe could someone tell something about that?