I have 2 dimmers switches in room.
LEDS are dimmable
Dimmer 1 - controls 6 LED's
Dimmer 2 - 2 LEDS
Dimmer 2 -- the LEDS will not shut completely off
I swapped switches and put Dimmer 1 to control the 2 LEDS.
Same issue!
So it is not the switch,
And the 6 LEDS shut off completely no matter what dimmer switch I use.