Description of problem:
Copying some text.

Version-Release number of selected component:
lyx-2.1.4-2.fc23

Additional info:
reporter:       libreport-2.6.2
backtrace_rating: 4
cmdline:        /usr/bin/lyx
crash_function: operator delete
executable:     /usr/bin/lyx
global_pid:     4086
kernel:         4.2.0-1.fc23.x86_64
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #6 operator delete at ../../../../libstdc++-v3/libsupc++/del_op.cc:46
 #7 __gnu_cxx::new_allocator<char>::deallocate at /usr/include/c++/5.1.1/ext/new_allocator.h:110
 #8 __gnu_cxx::__alloc_traits<std::allocator<char> >::deallocate at /usr/include/c++/5.1.1/ext/alloc_traits.h:185
 #9 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_destroy at /usr/include/c++/5.1.1/bits/basic_string.h:185
 #10 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_dispose at /usr/include/c++/5.1.1/bits/basic_string.h:180
 #11 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string at /usr/include/c++/5.1.1/bits/basic_string.h:544
 #12 lyx::html::StartTag::~StartTag at output_xhtml.h:48
 #13 lyx::html::FontTag::~FontTag at output_xhtml.h:167
 #14 lyx::Paragraph::simpleLyXHTMLOnePar[abi:cxx11](lyx::Buffer const&, lyx::XHTMLStream&, lyx::OutputParams const&, lyx::Font const&, long) const at Paragraph.cpp:3015
 #15 lyx::(anonymous namespace)::makeParagraphs at output_xhtml.cpp:898