Displays unexpected props

[a2br]

Product and Version [VS/VSCode]: VSCode 1.53.2 (https://github.com/microsoft/vscode/tree/1.53.2)
OS Version: Windows
IntelliCode Extension Version: v1.2.11
Target Platform or Language: Typescript

Steps to Reproduce / Scenario:

1. Create a class named Session
2. Type new Session(). (or equivalent) and Ctrl+[SPACE] to display suggestions.
3. Displays unexpected properties prefixed by a star

I don't know if it's a bug or a feature, but in either case, it isn't a good thing in my opinion. Typing one of the properties below triggers an error (since it doesn't exit)

[markw-t]

tagging @uniqueiniquity to see this report

[ayim]

@markw-t does this issue occur because we don't compiler filter these results?
Should TS LSP not be showing the starred methods as options in the IntelliSense list?