Ardour 5.8 track rename crash

Thread 1 "ardour-5.8.47" received signal SIGSEGV, Segmentation fault.
0x0000555567ec4a40 in ?? ()
(gdb) bt
#0  0x0000555567ec4a40 in ?? ()
#1  0x0000555555f74e7e in idle_delete<FloatingTextEntry> (obj=0x555563c6e4a0)
    at /usr/src/ardour/libs/gtkmm2ext/gtkmm2ext/doi.h:33
#2  0x0000555555f77aa9 in sigc::pointer_functor1<FloatingTextEntry*, int>::operator() (this=0x555569868fb0, _A_a1=@0x555569868fb8: 0x555563c6e4a0)
    at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:111
#3  0x0000555555f777c9 in sigc::adaptor_functor<sigc::pointer_functor1<FloatingTextEntry*, int> >::operator()<FloatingTextEntry*&> (this=0x555569868fa8,
    _A_arg1=@0x555569868fb8: 0x555563c6e4a0)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:89
#4  0x0000555555f774ec in sigc::bind_functor<-1, sigc::pointer_functor1<FloatingTextEntry*, int>, FloatingTextEntry*, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>::operator() (this=0x555569868fa0)
    at /usr/include/sigc++-2.0/sigc++/adaptors/bind.h:1124
#5  0x0000555555f76e04 in sigc::internal::slot_call0<sigc::bind_functor<-1, sigc::pointer_functor1<FloatingTextEntry*, int>, FloatingTextEntry*, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>, bool>::call_it (
    rep=0x555569868f70) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:115
#6  0x00007ffff420e552 in ?? ()
   from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#7  0x00007ffff3c9d68a in g_main_context_dispatch ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007ffff3c9da40 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#9  0x00007ffff3c9dd62 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007ffff3531a47 in gtk_main () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#11 0x00007ffff74ef4f9 in Gtkmm2ext::UI::run (this=0x555557038f30, old_receiver=...) at ../libs/gtkmm2ext/gtk_ui.cc:286
#12 0x000055555608bf9f in main (argc=1, argv=0x7fffffffd3d8) at ../gtk2_ardour/main.cc:439