I am experiencing a frustrating problem where my button does not receive any mouse input specifically inside a container. I have set every mouse filter to ignore that could interfere with my button node. Here is the scene for reference:
Any help is appreciated 
Hi!
The scene you’ve sent has the Play button mouse filter set to Ignore, which is obviously an issue, you should set it to Stop (or Pass, depending on what you want, but both cases will receive the input).
Also, set the Background Color mouse filter to Ignore as it’s preventing the button from being clicked. I’m not sure about that, but it seems the Z index only affects the rendering, while input detection is unaffected; what you can do is moving the background up in the hierarchy so that it is rendered behind other elements while not interfering with input detection (even though it’s a background color so it would make sense to ignore mouse anyway).
Hope that helps!
PS: sending the scene is perfect for this kind of problem, but keep in mind that sending .tscn file alone may not be enough if the scene has dependencies to other files in your project. When opening your scene, I had missing dependencies that were not a problem to fix your problem, but with a more complex bug, it could be insufficient to send the scene only.
Wow that worked perfectly! Thank you so much for your help
I should have thought of that 