hi,
i just found a regression that slows down writing math significantly (at least
for me).
How it is in 1.4.x: When the cursor is at the beginning of a cell (e.g. numerator of a \frac,
exponent of a superscript, ...) and you type backspace then the surrounding math macro is removed
and what remains is the contents of the cell (e.g. the numerator without \frac, the exponent alone,...).
In 1.5svn the cursor is just put before the math macro without changing
anything.
Bernhard
PS: i don't know if i used the terms cell and math macro correct in the sense of lyx, but i think
you can understand the problem.