John McCabe-Dansted wrote:
To reproduce, press the following keys:
Cntl-n (new document)
Cntl-m (enter math mode)
a
_
b
-> (leave subscript)
-> (leave mathmode)
<- (reenter mathmode)
Shift- <- (selects a_b)
Cntl-m (changes font)
Cntl-z (undos change)
Confirmed. Backtrace:
lyx-qt4.exe!std::vector<lyx::MathArray,std::allocator<lyx::MathArray>
>::operator[](unsigned int _Pos=1) Line 756 + 0x17 bytes C++
Here pos==1 and size()==1
lyx-qt4.exe!lyx::InsetMathNest::cell(unsigned int i=1) Line 91 C++
lyx-qt4.exe!lyx::CursorSlice::cell() Line 46 + 0x38 bytes C++
lyx-qt4.exe!lyx::DocIterator::cell() Line 239 C++
lyx-qt4.exe!lyx::`anonymous
namespace'::doRecordUndo(lyx::Undo::undo_kind kind=ATOMIC, const
lyx::DocIterator & cell={...}, int first_pit=0, int last_pit=0, const
lyx::DocIterator & cur={...}, const lyx::BufferParams & bparams={...},
bool isFullBuffer=false, lyx::limited_stack<lyx::Undo> & stack={...})
Line 104 + 0x25 bytes C++
lyx-qt4.exe!lyx::`anonymous namespace'::textUndoOrRedo(lyx::BufferView &
bv={...}, lyx::limited_stack<lyx::Undo> & stack={...},
lyx::limited_stack<lyx::Undo> & otherstack={...}) Line 163 + 0x3f bytes C++
lyx-qt4.exe!lyx::textUndo(lyx::BufferView & bv={...}) Line 241 + 0x29
bytes C++
lyx-qt4.exe!lyx::BufferView::dispatch(const lyx::FuncRequest &
cmd={...}) Line 734 + 0x9 bytes C++
