I’ve had on and off problems with the usb dongle for my remote not receiving correctly from the remote ever since I started using it with the Pi. I always thought it was because I wasn’t using an adequate power supply.
I connected the dongle to a USB extension cable (not a hub) to make it easier to get to and all the sudden it works perfectly.
Early in the history of the Pi, there was a flap about its radiation and there are threads (elsewhere) about the investigations and possible use of extra shielding. It does radiate, but does pass the requisite tests.
I find that an unshielded Pi, working near a DAB radio, can stop it receiving, as can a tablet.
I found, in other contexts, that putting the dongle on an extension will get a setup to work.
Derek