Drop-down problem in version 2.5.9 too
I got that problem for some time. Not sure which version it started.
When I need to do data entry using drop-down (combo boxes), I have to switch to IE.
Here is the problem.
If you have combo box and you are a mouser, no problem. You click the drop-down, do your selection and everything works.
Now, if you works and know first letter, you should be allowed to click first letter (ex: click W to select Washington), and if you don't know the choices, you click Alt-down and list open. Both those works in IE but not in Maxthon (but it used to work at some time).
That doesn't stop me to use Maxthon (I been using it since the time it was named after IE), but unfortunately, that force me to switch to IE for some web applications.