Problems in problems window not disappearing when closing a document

[DonJayamanne]

• Use new language server
• Open a python file
• Confirm messages are displayed in problems window
• Close the python file
• Problems are still displayed in the problems window (they should vanish)

[MikhailArkhipov]

openFilesOnly is set to true, right?

[DonJayamanne]

Will check

[DonJayamanne]

Can confirm this is still a problem.
openFilesOnly = true