I just managed to crash LyX by clicking on the first line of a multiline
equation and selecting "Insert Label" from menu. The label popup never
appeared.
I didn't manage to crash it another time, so I guess this bug report is
pretty useless, but I hope the best.
Also, when I click on the equation moving the cursor from text-mode to
math-mode the equation and everything below it moves about 10 pixels
down. Then if I click again at the text line above the equation, the
equation jumps up again. That is strange. Also, screen update doesn't
quite work, the uppermost character (sum superscripts) are not cleared
correctly when the equation jumps down (ie. I get double superscripts).
This happens when I click repeatedly on text and equation for about 5-15
times or so, then it stops and LyX works as I suppose it should (ie. the
equation doesn't jump around anymore). I get the jumping effect back if I
scroll the scrollbar slightly.
Maybe LyX doesn't like the equation because I used heavily matrices and
underbraces in it. I also imported it from earlier LyX version, but made
lots of modification.
LyX 1.1.6, RedHat 6.2 clone (IT Linux 2000), AMD Athlon 800 MHz.
