Can't copy (Ctrl+C) and make search (Ctrl+F) by formulae on feynmanlectures.caltech.edu. FF 18.0.2 works fine
When I select a text by the left mouse button , the formulae are not copied to the clipboard. Also browser skips symbols of the formulae from the search.
Tried in :
Tor browser all versions (4, 5, 6)
Page for try: http://www.feynmanlectures.caltech.edu/I_13.html