@David Catuhe I tried opening urzagatherer.app in my Android Firefox, and got the same issue as discedunt (of deck cards being unclickable/unopenable). I connected my phone to my PC and opened dev-tools, and I think I found the issue... In "deckCard.tsx", there is the "DeckCard.onClick" handler, and in it, there is this code block: ``` if (_evt.buttons !== 0) { _evt.preventDefault(); _evt.stopPropagation(); return; } ``` In desktop Firefox the above works fine, because when clicked with an actual mouse, the "buttons" field has "0" as the value. (I tested by running this in console: `$0.onclick=e=>{console.log(e); debugger;}`) In mobile Firefox however, the "buttons" field has "1" as the value, when tapped with one's finger. (again, checked by running the code above in console) I have not 100% confirmed that the above is the issue (for example, it's possible React's synthetic-event uses a different value for the "buttons" field than the native value checked with my console code), but I'm pretty sure it is the cause of the problem. (I tried adding a breakpoint to the original code to confirm the value mismatch, but for some reason, the remote Firefox dev-tools was failing to insert the breakpoint in the place I wanted.) EDIT: Here is the MDN reference page on the subject (doesn't fully explain why Chrome gives a different value than Firefox on Android, but does show how both "0" and "1" are "valid values" for a left-click): https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/buttons