This may be a Meta Horizon Worlds Issue but is it possible to tap multiple buttons at the same time on mobile? For example, I have two buttons and want to tap both. I can't test this in Studio but when I test in mobile preview in Meta Horizon Worlds only one button command is firing.

Although many controls support multi-touch interactions, for example, you can move several sliders at the same time with multiple fingers, Buttons do not support simultaneous multi-finger activation. This is intentional, as multi-touch button presses would behave inconsistently and feel unnatural from a UX standpoint.

Buttons are more restrictive, but you can design your UI to allow multi-touch using other elements, such as multiple interactive rectangles.

Additionally, Meta Horizon Worlds may apply its own interaction logic on top of this.