this behavior is by intention. Max Voices, Max CPU and Voice Fade Out are definable per HALion instance.
So only your host project or a HALion Multi program will save and restore these settings. From the UI it’s maybe not perfectly obvious though we put the controls in one frame to separate them graphically.
I just checked the documentation and unfortunately it’s not mentioned there neither … we will add a note to the documentation.
If you want to “wake up” the HALion Standalone with your custom settings you can set them and then click “Save as Default” on the multi program slot. This will save a your personal startup preset, including these settings.