Hi Creswell Gould
Thank you for contacting Syncfusion support.
We have checked the reported “Maximize causes the window to collapse or the buttons disappear” in our Metro Form, but we were unable to reproduce the reported issue. We have also prepared the sample and video for your reference. It can be downloaded from the below link,
Window move to the left side of the screen may be appear due to MaximumSize set for MetroForm. Maximum size restrict Maximized window to full view and locate the window from left side of the screen to it Maximum size. You have mentioned “use the theme in my C# application switching: Form to: Metroform”, please share more details about how you have perform Switching from Form to MetroForm. Please get back to us with more details like sample or modify the above sample to reproduce the issue. This would help us to provide the solution at earliest.
Regards,
Mallika