Looks like there is a problem with the spindle selection drop down. I have a PWM (laser) and a VFD spindle connected. Using the $Spindle command I can see:

$spindles
0 - PWM, enabled as spindle 1
1 - Huanyang v1, enabled as spindle 0, active

Swiching from the Huanyang v1 to PWM doe not chnage my active spindle.

If I use M104Q1, my spindle will chnage to PWM as displayed by the $Spindle command and the drop down selection will match the selection.

If I issue M104Q0, it will revert to Huanyang v1 and operate as expected. I have tried version 2.044, and the latest 2.0.45p10 on Edge.