YueScript compile error with line comments wrong indent

I encounter this error when work with class. Nothing is serious but maybe you could take a look.

class Behavior
  Start: =>
    Debug.Log("START!")  
-- Observable.EveryUpdate()\Subscribe ->Debug.Log("UPDATE!")
    observable = Observable.EveryUpdate()
    -- observer = Observer.CreateSubscribeObserver((->Debug.Log("UPDATE!")), Stubs.Throw, Stubs.Nop)
    -- disposable = observable\Subscribe observer
    -- DisposableExtensions.AddTo disposable, @actor
  Update: =>

It show error:

5: unexpected indent
    observable = Observable.EveryUpdate()
    ^

Thanks and regards!

No source file or test is named. Start by reproducing the provided class and comment layout through the YueScript compiler, then trace the reported unexpected indent at line 5. Done means this input compiles without treating the line comment as an indentation error.