Watt Measuring Cable Not Working With Samsung Devices

I have had this cable for several months now, and it use to work reliably on all my devices. However, now, it simply will not properly show how many watts any of my Samsung devices are charging at. This includes my S24 U (OneUI B7) and my Tab S9 FE (OneUI 6.1.1). It does work with all other devices, however, including my Steam Deck. I did notice that when I prop the cable up on my phone and tablet, it will reliably show the Wattage, however not when it is just sitting there. Could this perhaps indicate a fauult in the hardware of Samsung USB C ports, and potentially hint at a port failure? Or is it just some sofware bug?