WaveLab Pro 9 - Can't re-open hidden tool and meter windows

I’m running WaveLab Pro 9 on Windows 10. When I hide a tool or meter either individually or as a group, I can’t reopen it from the tool or meter menu. The only way to get it back is to restore the default workspace. Does anyone else have this problem or know what I am doing wrong?

Thanks

That is odd behaviour. Seems OK here.

Thanks for checking. I rebooted my computer and all seems well now. Sorry I didn’t try that before posting