Tech@ZWO
I used the ASCOM driver in NINA, as well as the ASCOM driver in SGP. Neither one is working with the unidirectional/one-way selection. It does work directly from the ASCOM Settings window. This is with the most recent 6.5.17 ASCOM driver (which says 6.0.9 for the EFW version when it installs).
The ASCOM Platform is 6.6, SP1 which I did a Repair on. I also re-installed the 6.5.17 drivers.
I looked in the ASCOM Profile Explorer and in the Filter Wheel section it showed Unidirectional=false even though in the ASCOM Filter Wheel chooser the Unidirectional box was checked. I changed that to true in the ASCOM Profile Explorer and it now works as Unidirectional. However, if I uncheck that box in the ZWO Settings Chooser, it does not update that value in the Profile back to "false" and SGP continues to run Unidirectional. I completely uninstalled all the ZWO drivers and the ASCOM Platform and reinstalled them all. Same result.
It seems that the EFW ASCOM driver is remembering whether that is checked or not when the Chooser is brought up, but it does not get updated back in the ASCOM Profile for the filter wheel.