Smart Switch no neutral wire - fake load, load emulation, bypass capacitor, resistor? etc

[Sir_Goodenough ((SG) WhatAreWeFixing.Today)]

I tried to answer in your earlier thread, does this help?

How does a no-neutral switch get power?

Use a device made for that purpose (load) like the ones I linked above, not some random device. Also I would think if you put a device as an actual load there, so when it turns on it stays on, that would help.