KiCad does not load footprint generators wizards if PCB Editor is not open (ie: can't be used in Footprint Editor)

Description

KiCad does not load footprint generators until the PCB Editor is open

Steps to reproduce

vokoscreen-2022-03-21_18-18-05

KiCad Version

Application: KiCad Footprint Editor

Version: 6.0.3-a3aad9c10e~116~ubuntu20.04.1, release build

Libraries:
	wxWidgets 3.0.4

Platform: Linux 5.4.0-104-generic x86_64, 64 bit, Little endian, wxGTK, cinnamon, x11

	wxWidgets: 3.0.4 (wchar_t,wx containers,compatible with 2.8) GTK+ 3.24
	Boost: 1.71.0
	OCC: 7.5.2
	Curl: 7.81.0
	ngspice: 31
	Compiler: GCC 9.4.0 with C++ ABI 1013

Build settings:
	KICAD_USE_OCC=ON
	KICAD_SPICE=ON