"Documentation" area goes lost when moved outside the "filePanel"

[Raydir]

hey @mattbierner

First: I just stumbled over your extension and it absolutely made my day - already made +300 Tooltips for my own extension / language now :)

I guess i found kind of a bug, but i'm not sure if you already know:

Steps to reproduce

1. move the documentation panel to e.g. the right boarder of vscode:
   
2. close vscode
3. reopen vscode

The "documentation" area now is gone -> even in filePanel.
I also tried to activate it again via context menu, but documentation is not shown there:

Only solution for the moment that I found:

1. deactivate your extension
2. reactivate your extension

Am I missing something?
Perhaps you should create a "specific" ViewPanel just for Documentation?

Many thanks
Roman