When starting my latest RStudio version (1.2.1335), I can choose 'Check for Updates' from the Help menu and all is working fine. However, after starting and closing a Shiny application, this option is gone from the Help menu. Only restarting the IDE solves this issue again.

How to reproduce:
- Create New File > Shiny Web app ...
- Check Help > Check for Updates << option is available
- Click Run App, then close it
- Check Help > Check for Updates << option is gone