Android UI non functional

I have a game with a simple UI attached to a second camera (in Screen Space). When I port to android, the game is properly printing logs to the monitor to register that I am touching (Mouse Down) but the UI may as well not be present, no logs print, no raycast collisions, and certainly no button action. As they function fine with my mouse on the PC I am completely lost.

It doesn’t appear to have anything to do with masks (the ui is set to the UI layer, and the camera2 is set to only render UI) … I’ve played with the depth, but the UI graphically appears, I can even bypass it and do touch interactions with everything else, and the mouse click events work fine on pc just not the touch recognition on the UI itself, which is frustrating in the extreme.