[Firefox] File tree context menu shows just "Paste" and opens unreliably

[souldzin]

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

• VS Code Version: 1.96.3
• OS Version: Firefox on Mac through https://github.dev

Steps to Reproduce:

1. On Firefox, go to https://github.dev and authenticate
2. In the file tree, Right Click to trigger the context menu
3. ISSUE: Sometimes a menu with just "Paste" shows up
4. Right Click in the file tree again
5. ISSUE: Sometimes 2 menus show up (one with "Paste" and one with the actual context menu)

[souldzin]

I've also noticed this happen on 1.93.1 and not on 1.89.1

[lramos15]

Does this happen when you have files open too? And does it happen to other context menus in other places?

[souldzin]

Does this happen when you have files open too? And does it happen to other context menus in other places?

@lramos15 this seems to only effect the file tree tab.

File context menu	On search tab

I see it happening on github.dev whether or not an actual project is open.

[Justman100]

Does this happen when you have files open too? And does it happen to other context menus in other places?

@lramos15 this seems to only effect the file tree tab. File context menu On search tab

I see it happening on github.dev whether or not an actual project is open.

And the integrated terminal

[TrueOsiris]

To enable the rightclick menu, set dom.events.testing.asyncClipboard to True in about:config

[Justman100]

To enable the rightclick menu, set dom.events.testing.asyncClipboard to True in about:config

Just tested! WORKS! However, this bypasses clipboard protection! So it increases certain risks! A native fix is therefore still (urgently) required!