@Wayne-TP I've cheated and taken the temperature condition off, so that the automation should just fire when the switch comes on. It does if you manually push the button or click it in the app, but if another automation sets it off (say a timer) then the subsequent "on" trigger does not happen. Looks like a bug to me! 

  @Wayne-TP  Hiya, what settings would you like?

I could set up a test switch to see if I can replicate the behavior.

  @Wayne-TP OK, These tests show that down-stream triggers/actions do not happen on the S210 using the on/off trigger

This is only a test scenario to demonstrate that downstream triggers do not occur, I can obviously bypass the switch to achieve the P110 changing, in reality I have 2 or three things hanging off the switch (outside lights from smart plugs, solenoids on S210 & indicators and smart bulbs.) The Switch acts as an agregator for the actions and gives a physical overide.

Test scenario:

Smart Button S200b, Smart Switch S210, Smart Plug P110

Automations:

1. When S210 is switched on -> Switch On P110
2. When S210 is switched off -> Switch Off P110
3. When S200B is tapped -> Toggle S210 on/off
4. Switch Automation: 14:00 -> Switch on S210 
5. Switch Automation: 14:05 -> Switch off S210 
6. Schedule Automation: 15:00 -> Switch on S210
7. Schedule Automation: 15:05 -> Switch off S210

Action/results:

Turn S210 on in app -> S210 on & P110  On (OK)

Turn S210 off in app -> S210 on & P110  Off (OK)

Press S210 on Physically -> S210 on & P110 On (OK)

Press S210 off Physically -> S210 off & P110 Off (OK)

Time =1400 -> S210 on & P110 on (OK)

Time = 14:05 -> S210 off & P110 off (OK)

Time = 15:00 -> S210 on & P110 no change (BAD) - 1 did not trigger

Time = 15:05 -> S210 off & P110 no change (BAD) - 2 did not trigger

Tap S200B -> S210 toggle to on/off & P110 No Change (BAD) - neither 1 or 2 triggers