I don't know if it's just my computer, but ever since I updated to the latest version of OD, the dock no longer appears when mIRC is maximized. ie I can't mouseover the bottom of the screen (where my dock is located) with my mouse and have it appear as it should. (Normal Window Z-ordering with mouse activation.) Instead, it stays behind mIRC and I can't access it.
I've looked to see if there is an option to enable/disable mIRC to be on top of all other windows, but there doesn't seem to be one.