display error with drop-down-lists on mac

hi,
today, i first installed agiletrack client 0.8b on my windows box. i just have installed it also on my mac pro. agiletrack can be started, you can create procects, tasks and so on…

there is only one anoying bug: all the drop-down-lists look empty.
either the list is shown behind the drop-down-element or an empty list is shown.
but you can use the cursor to scroll down and choose an option.