QtDragon on Debian Buster, some issues

Thanks to tommylights quick and easy install procedure, I have LINUXCNC - 2.9.0-pre0-2118-g0c8cdaaf1 running on Debian Buster.
I'm also using Qtdragon's excellent GUI running a Gantry. Now , I'm having a few issues as listed :
1. In Qtdragon, I can home all axes just fine , individually or together (home all). But , when one axis is homing and I press home for another axis, the first axis ignores the home/limit switch and crashes into the hard stop.
2.I can't get the probe screen activated.
3. Calibration on the Settings page does not bring up the window.
4. Not related to Qtdragon, but my XHC-HB04 wireless MPG does very slow Accel and Decel when moving an axis. How or where can I steepen the bell curve for axis movement ?
Thanks ,

I just pushed the fix for the calibration button - it may take some time to run through buildbot before being able to update.

probe screen - did you connect all the HAL pins?
linuxcnc.org/docs/2.8/html/gui/qtdragon.html#_hal_pins

homing - I'll look into deeper

You also haven't set the path for the basic probe subroutines.
( this sample isn't right for an installed version - you will need to find the path to this folder though)
[RS274NGC]
SUBROUTINE_PATH = ../../../../nc_files/probe/basic_probe/macros

can you also post the xhc hb04 hal you use
it shoudt be in a postgui file not a machine File to run propper

Thanks Chris,
I will follow thru with the clues on both and get back.

Thanks for the reply bbsr_5a,
My xhc hb04 hal is in the main hal attached above. I will move it to postgui as you say and try it. All functions work, just that axis movement startup and stopping is very slow.