Curious as to why this is the case. I can see how loops can enter a race condition, but for those of us that know how to properly run loops, why can’t we do this? Put the impetus on the user to make the decision.
I totally agree with you. The only reason why this is not yet available is “no time yet” - it is certainly on our todo list for 2019.
Workaround: You can already use GotoIf to create nested loops.
Yes, nested ifs and whiles REALLY need to be implemented. This is a crucial thing.