Yep, same experience here. Even simple things like staying logged in didn't work with IE. Everything works great with Firefox.

Strictly speaking that is IE/Windows vs Firefox/Linux but I think the difference comes from browser not OS.

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8