No issues firefox or chrome if you disable some settings under javascripts... I'm edit this in a minute with the settings needed.
Edit:
In Options under Content, Click Advance. Uncheck "Disable or Replace context menus."
This should allow right clicking, Middle click for new tab and remove the Copy/Paste bug.
Be aware you can't right click links on this forum, its all javascript and ASPX based
Edit again: Just testing to see if HTML works, BBC code does not:
Test link...Testing image scipt from old forum: < img src ="" >
Both fail so where is this "Attachment" system...