Using the left hand start button, getting false triggers

Hi,

I'm trying to use the start button on the left hand controller of the quest 2, but I am having trouble with it conflicting with another button  on the controller. I am using the new input system and have three actions set in an action map, see the attached image.

I am getting the Pause Game action coming through when I press the "start" button, but the problem is that when I press the "Y"  button, I get both the Toggle Debug Console action AND the Pause Game action. I have no idea why I would get both actions triggering when the one button is pressed.

My Player input is setup like this.

Does anybody know why this could happen and how to get around it?

Thanks