• VSCode Version: 1.49.0
• OS Version: Windows 10

Steps to Reproduce:

1. Open two files in separate editors in VS Code
2. In extension development code, utilize the VS Code API to designate extension behavior to open a new editor (of type webViewPanel) in the specified viewColumn.
3. Specify the viewColumn = 1+ (current number of editors open)

Expected: The new editor will open in a new, right-most column.

Actual: The new editor opens as a tab inside a new column, in between the two open editors.

Does this issue occur when all extensions are disabled?: Yes/No

I am currently trying to use the VS Code API for extension development. The behavior I am trying to achieve is to open a new webViewPanel editor on the rightmost column on the screen. I have tried assigning the viewColumn of the new editor to all available options shown in the API, but the editor opens in between the currently opened editors.

https://code.visualstudio.com/api/references/vscode-api#ViewColumn