1. - mark anything in a formula and copy it with ctrl-C - pasting works as long as you do not insert a ^ with a following space, than the buffer is empty. maybe that this is only seen when you have dead keys.
2. - enter a fraction \frac - enter 3 - move cursor down to the denominator - enter a minus - ---> - and cursorposition are wrong. with the next input all is correct. Herbert -- http://www.lyx.org/help/