Webstorm Code Completion is not context sensitiive Follow

It seems like Code Completion in Webstorm shows not only valid options for functions for a specific object or element, but any and all functions and variables for all objects and elements available.

For example, when using Math.  If I type the period, this is what pops up:
    
However, scrolling down shows ALL possible choices, even totally invalid ones:

Any way to limit this?

Thanks

Lou