I’ve always had a problem with applet Keyboard AutoSwitch.
Asked about it a year ago and found a workaround (2227).
Workaround is to delete files lang_data and default_lang from .config/budgie-extras/langswitch.
This always works, but for some time. After a restart or some time (haven’t tracked exact time), it goes corrupt again.
This happened in 18.04 and same now in 20.04.
Does anybody have this problem too? Workaround becomes hard when repeated many times.