Can't change Properties of axwindowsmediaplayer on second form

I have a C# Forms Application which uses an instance of axwindowsmediaplayer, created at design time, which works fine.

I'm now trying to add another media player to a different form in the same application and I can't change any of the properties on the media player. For example, clicking on the arrow to expose options for a boolean property doesn't show a list showing true/ false, and trying to click on the Name property to rename it causes a tooltip showing the default name(which is axWindowsMediaPlayer1) to pop-up obscuring the Name property textbox.

I'm probably missing something very obvious, has anyone else encountered this?

Thanks in advance.