Spindle FWD button issue

Hello,
I have come across this strange behaviour:



Run spindle, lower rpm via S code and spindle stops. However button FWD stays on
So two issues:
1) spindle stops via S6000 command in this case
2) FWD button does not reflect current spindle state

UPDATE: It is happing on sim and axis as well, so probably general LinuxCNC issue.

Might not be an issue, there is the posibillity of setting the minimum speed, so anything under it will stop the spindle while the spindle switch remains on.
Had to do this quite a while back due to usig an air cooled spindle that had a min speed of 8000RPM.
Can not recall exactly what was needed to change that, sorry.

I will double check the minimal rpm speeds for spindle, but I am able to start the spindle even at 300rpm.
The issue is, that when the spindle is started using FWD button and then changed speed only via S command in MDI, the spindle does not change the speed, but stops entirely, but the hal pin stays in mixed state:spindle.0.runs-forward is true but spindle.0.is-on is false.