Light Bulb Transition Speed Setting is Hidden

I have a TP-Link bulb that is one of three in a chandelier. When I ask all three to turn off immediately Dining Room Light 1 always transitions off for about 5 seconds while the rest turn off immediately. I cannot figure out how to change it.

  1. When I disable the device and just use the native app the light bulb works as intended. That must mean there is a setting in HA causing the transition.
  2. I tried changing the enty name to remove any pre-existing association but that didn’t help.
  3. I tried turning it off in multiple ways, through the native app, light off service call, and a light off with a very short transition but it still turns off at the same speed.

How can I identify the setting causing it always transition off instead of turning it off immediately?