Hi Richard, I dived into this bug a while ago. The problem is that the math inset exists of two cells: the real one and an insetmathchar representing the extra whitespace in the malformed document..
Because the inset is supposed to consist of only one cell, things go wrong. Fyi Op 28 mrt. 2014 21:57 schreef "LyX Ticket Tracker" <t...@lyx.org>: > #8860: assertion when entering an instant preview box > ----------------------+------------------------- > Reporter: skostysh | Owner: lasgouttes > Type: defect | Status: reopened > Priority: normal | Milestone: 2.1.x > Component: mathed | Version: 2.1.0svn > Severity: normal | Resolution: > Keywords: | > ----------------------+------------------------- > > Comment (by rgheck): > > OK, so here's the problem. If you move your cursor slowly, you can see > that it is possible to enter the math inset with the preview image still > being displayed. That is because it is in an InsetMathPar or something of > that sort. When you move right again, you were already in math, so no > metrics update is triggered, and we crash when trying to draw the formula > itself. > > -- > Ticket URL: <http://www.lyx.org/trac/ticket/8860#comment:25> > The LyX Project <http://www.lyx.org/> > LyX -- The Document Processor >
