[tor-bugs] #21719 [- Select a component]: Can't copy (Ctrl+C) and make search (Ctrl+F) by formulae on feynmanlectures.caltech.edu. FF 18.0.2 works fine

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#21719: Can't copy (Ctrl+C) and make search (Ctrl+F) by formulae on
feynmanlectures.caltech.edu. FF 18.0.2 works fine
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     Reporter:  Ilya_SpongeBob        |      Owner:
         Type:  defect                |     Status:  new
     Priority:  Medium                |  Milestone:
    Component:  - Select a component  |    Version:
     Severity:  Normal                |   Keywords:
Actual Points:                        |  Parent ID:
       Points:                        |   Reviewer:
      Sponsor:                        |
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 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)

 * FF 18.0.2
 https://sourceforge.net/projects/portableapps/files/Mozilla%20Firefox%2C%20Portable%20Ed./Mozilla%20Firefox%2C%20Portable%20Edition%2018.0.2/

 Page for try:
 http://www.feynmanlectures.caltech.edu/I_13.html

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21719>
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