I came here with the same problem -- new Lenovo Thinkpad X1 Titanium with 11th Gen i7. Crashes anytime I try to screen share.
EDIT:
I just updated to the latest Zoom client (looks like they've been releasing them in rapid succession lately) and no more issues, version 5.6.3 (751) works fine for me. FWIW, I disabled hardware acceleration during screen share just in case.