I think the voltage boosting microcode bug on 13th and 14th gen are generally considered to have been solved. I have not heard of any issues on the Intel 100/200 series CPUs. I would definitely recommend updating the BIOS on any 13th or 14th gen laptops, though.
Do you have the bolt and plasma-thunderbolt packages installed? I believe I had to do that to use a thunderbolt SSD enclosure/docks with my laptop. I am not sure about DP alt mode, though.