[Platform Dependent Compilation]: Mobile Platform Properties are not shown in auto-completion in Monodevelop and VS

1. What happened
The auto completion in MonoDevelop no longer shows directive for all mobile platforms.
2. How we can reproduce it using the example you attached

1. Open Unity.
2. Add new C# script. Open it in Monodevelop (or VisualStudio).
3. Add any of platform defined properties (listed http://docs.unity3d.com/540/Documentation/Manual/PlatformDependentCompilation.html), like "UNITY_".
Actual behaviour: In MD only stanalone platforms and versions are listed. No mobile platform properties are suggested.
Expected behaviour: All standalone, mobile and are listed in auto-complete dropdown.

Same behaviour in 5.2.4f1, 5.3.4f1, 5.4.0b18.