Why use await Task.Delay(1) in Blazor wasm?

Many SO answers use await Task.Delay(1) to solve various async rendering issues in Blazor (wasm). I've even found a number of places in my own code where doing that "makes it work".

However it's always stated as matter of fact, without a thorough explanation, and I can't find this technique in the docs either.

Some questions:

• Why use await Task.Delay(1) - when would I use this technique, what is the use case?
• The docs do not discuss this (that I could find); is it because it's a hack, or is it a legitimate way to deal with the use case?
• Any difference between Task.Delay(1) and Task.Yield()?