According to ** Frank ** :

Control circuit should be independent of load, sounds like a poor design.
Would be interesting to see a schematic of this circuit.

Dimmers need to be able to operate the electronics when the light
is off. If the light is off, there's no current in the bulbs. Where
would the power come from then?

Instead, they leak a bit of current through the load and scavenge
what they need off that. If the bulbs are too small, there might
not be enough current flow to energize the electronics.
--
Chris Lewis,

Age and Treachery will Triumph over Youth and Skill
It's not just anyone who gets a Starship Cruiser class named after them.