Minimizing and maximizing the entire mRemoteNG application window works fine, but bringing it to the foreground when some other application is covering it doesn't work.
Steps to reproduce:
1) Maximise mRemoteNG on one of your monitors (actually, this bug is reproducible even when mRemoteNG isn't maximised. Just make sure mRemoteNG is visible on a monitor at the start).
2) Maximise some other application on that same monitor. So at this stage, mRemoteNG is simply in the background, i.e. it is obscured by the other application.
3) Click on mRemoteNG's icon in the taskbar.
4) Notice that mRemoteNG doesn't come to the foreground as expected. Instead, to get mRemoteNG to reappear, you have to click twice more on the taskbar icon (once to make it minimize, and once more to make it restore/maximize).
Windows 7 x64, Windows XP x86