User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:71.0) Gecko/20100101 Firefox/71.0
Steps to reproduce:
Create a new Firefox instance
Copy+paste a link beginning w/ 'view-source:' into the URL bar.
Right-click context menu items for the View source page (such as syntax highlighting) do not appear for clicking.
Right-click context menu items for the View source page (such as syntax highlighting) should appear for clicking.
I have managed to reproduce this issue on latest Firefox Release (69.0.2), Beta (70.0b12) and Nightly (71.0a1 (2019-10-06)) versions on Windows 10 x64 and Mac OS 10.15 Beta.
Thanks for the report! I can also reproduce this on my machine (Win10)
Jonathan, perhaps you could look at the patch?
Or is there someone else who could review it?