Scene not getting set to ON - Scene became not set

Hi, I have searched but not found and solution to this.

I have a scene consisting of 4 Hue bulbs (via bridge) and two zwave lights. The scene is toggled by a push-button. Fairly often, I push the button to turn the scene on - all the lights come on - but the scene is still set to "Not Set". When I push the button to toggle to off, the light stay on but the scene then goes to "on". I then press it again and the lights finally turn off. This happens about 50% of the time - the other 50% it works correctly.

The logs show the following:

app:1132021-06-09 03:38:40.550 am infoScene became not set from Hue color spot 3 switch on
app:1132021-06-09 03:38:40.542 am infoScene became not set from Hue color spot 3 switch on
dev:542021-06-09 03:38:40.478 am infoHue color spot 3 was turned on
dev:542021-06-09 03:38:40.474 am infoHue color spot 3 was turned on
app:1132021-06-09 03:38:40.428 am infoActivation complete
app:1132021-06-09 03:38:40.413 am infosetLevel: Hue color spot 3, level: 80
app:1132021-06-09 03:38:40.347 am infosetCT: Hue color spot 3, temp: 2000
dev:532021-06-09 03:38:40.327 am infoHue color spot 2 was turned on
dev:532021-06-09 03:38:40.312 am infoHue color spot 2 was turned on
app:1132021-06-09 03:38:40.256 am infosetLevel: Hue color spot 2, level: 80
dev:522021-06-09 03:38:40.241 am infoHue color spot 1 was turned on
dev:522021-06-09 03:38:40.222 am infoHue color spot 1 was turned on
app:1132021-06-09 03:38:40.212 am infosetCT: Hue color spot 2, temp: 2000
app:1132021-06-09 03:38:40.181 am infosetLevel: Hue color spot 1, level: 80
app:1132021-06-09 03:38:40.147 am infosetCT: Hue color spot 1, temp: 2000
app:1132021-06-09 03:38:40.117 am infosetLevel: 3 - Dining Room, level: 80
dev:552021-06-09 03:38:40.086 am infoHue color spot 4 was turned on
app:1132021-06-09 03:38:40.062 am infosetLevel: 6 - Kitchen, level: 80
dev:452021-06-09 03:38:40.051 am debugsetLevel value:80
app:1132021-06-09 03:38:40.025 am infosetLevel: Hue color spot 4, level: 80
app:1132021-06-09 03:38:39.997 am infosetCT: Hue color spot 4, temp: 2000
app:1132021-06-09 03:38:39.962 am infoBeginning activation
dev:572021-06-09 03:38:39.930 am infoMain Space Level 1 (Subdued) was turned on
app:1472021-06-09 03:38:39.922 am infoToggle Main Space Level 1 (Subdued) when 1 - Mood Only button 2 pushed Toggle
dev:442021-06-09 03:38:39.883 am infobuttonEvent() Button:2, Value:pushed
dev:442021-06-09 03:38:39.879 am infoSwitch configured as Momentary

The line "infoScene became not set from Hue color spot 3 switch on" only appears when the scene fails to turn on. I have searched for this but can't find much info. It's always spot 3 in this message - like that one spot is stopping the scene changing. However, that spot is turning on fine.

Any help appreciated.

Turns out it is not always spot 3. I got the same message with kitchen and dining room earlier.