Editor Page Initialization Performance Issue

[AndreySidorove]

Scenario: Too many one-time initialization operations during editor page first load
File: View/Editor.xaml.cs
Code:

if (!_isInitialized)
{
    _isInitialized = true;
    EnsureTimerInitialized();
    CacheScrollViewer();
    RegisterContextRequestedHandler();
    RegisterScrollViewerEvents();
    InitializeWorkingDirectory();
}

Issue: All initialization operations completed in single check may cause page load delay, consider phased or async initialization