> Might also be a unique combination between HW and software. I thought so, I tried with 2 different external harddrives, but then I noticed transferring on my

> Might also be a unique combination between HW and software. I thought so, I tried with 2 different external harddrives, but then I noticed transferring on my desktop between 2 internal drives had the same issue. Copying to the same drive / different partition appeared to be OK. I posted on pop_os on reddit and they were gonna help me but I ended up down a rabbit hole which resulted in me on Kubuntu without any issues other than a couple of UI issues which I can live with, and eventually fix.