Middle click on Linux can only paste from copied text, not from the Primary buffer

[howels]

Does this issue occur when all extensions are disabled?: Yes

• VS Code Version: 1.85.1
• OS Version: Ubuntu 22.04 LTS

Steps to Reproduce:

1. Select text (do not copy)
2. Select different text and copy with CTRL+C
3. Middle click in a blank area. You either see no pasted output with "editor.selectionClipboard": false or you see the clipboard contents with "editor.selectionClipboard": true

On Linux middle click should always paste the last selected text, never the text copied with CTRL+C. This breaks the standard OS clipboard behaviour on Linux.

[howels]

Behaviour seems inconsistent. I am now seeing the expected behaviour but when trying multiple times earlier this was not working.

[Aetherall]

I also have the issue on wayland