Hi, I have difficult time to produce reliable recipy, but I get consistent crashes when using undo in tables. Hopefully I narrow it down sooner or later, but the scenario is along the following lines:
0. Load the attached file. 1. "Some" random editing (also involing undo), this step is the "dificult" part of reproducibility, but I was capable to couple crashes within few minutes... 2. Go to the most right-top cell and choose via context menu and choose Column/Rows->Append row 3. Undo 4. Kaboom Backtrace: Thread 1 "lyx" received signal SIGSEGV, Segmentation fault. lyx::CursorSlice::paragraph (this=<optimized out>) at CursorSlice.cpp:59 59 return text()->getPar(pit_); (gdb) bt #0 lyx::CursorSlice::paragraph (this=<optimized out>) at CursorSlice.cpp:59 #1 0x0000555555775214 in lyx::DocIterator::paragraph (this=this@entry=0x555556e79310) at DocIterator.cpp:204 #2 0x00005555557752e0 in lyx::DocIterator::lastpos (this=this@entry=0x555556e79310) at DocIterator.cpp:270 #3 0x000055555575c23e in lyx::CursorData::checkNewWordPosition (this=0x555556e791f8) at Cursor.cpp:469 #4 0x000055555575c47c in lyx::CursorData::textUndo (this=this@entry=0x555556e791f8) at Cursor.cpp:549 #5 0x00005555558f705b in lyx::BufferView::dispatch (this=this@entry=0x555556e78cd0, cmd=..., dr=...) at BufferView.cpp:1390 #6 0x0000555555b5e9f2 in lyx::frontend::GuiView::dispatchToBufferView (this=0x555556a07500, cmd=..., dr=...) at GuiView.cpp:3592 #7 0x0000555555b72966 in lyx::frontend::GuiView::dispatch (this=0x555556a07500, cmd=..., dr=...) at GuiView.cpp:4255 #8 0x0000555555b3b804 in lyx::frontend::GuiApplication::dispatch (this=0x5555566af5f0, cmd=..., dr=...) at GuiApplication.cpp:2061 #9 0x0000555555b34b54 in lyx::frontend::GuiApplication::dispatch (this=0x5555566af5f0, cmd=...) at GuiApplication.cpp:1402 #10 0x0000555555b350b3 in lyx::frontend::GuiApplication::processKeySym (this=0x5555566af5f0, keysym=..., state=<optimized out>) at GuiApplication.cpp:2254 #11 0x0000555555b8547f in lyx::frontend::GuiWorkArea::processKeySym (this=<optimized out>, key=..., mod=<optimized out>) at GuiWorkArea.cpp:516 #12 0x0000555555b8866f in lyx::frontend::GuiWorkArea::qt_static_metacall (_o=0x555556b03850, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at moc_GuiWorkArea.cpp:124 #13 0x00007ffff67cc5e9 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #14 0x0000555555b84663 in lyx::frontend::CompressorProxy::signal (this=this@entry=0x555556e78740, _t1=..., _t2=<optimized out>, _t2@entry=lyx::ControlModifier) at moc_GuiWorkArea.cpp:362 #15 0x0000555555b87f71 in lyx::frontend::CompressorProxy::slot (this=0x555556e78740, sym=..., mod=lyx::ControlModifier, isAutoRepeat=<optimized out>) at GuiWorkArea.cpp:1064 #16 0x0000555555b887d6 in lyx::frontend::CompressorProxy::qt_static_metacall (_o=0x555556e78740, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at moc_GuiWorkArea.cpp:306 Pavel
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