Windows 10 Style not working properly with multiple monitors

This has been reported to the developers. Do you have your middle monitor as set the default?

I have it set as default, but have tried changing it to see if it changes anything. However it didn't help. With the other two options(Windown 7 and modern theme) I can set my default monitor to whichever one I want, and the start menu will stay on the one monitor which has the taskbar.

This image is from Win8, but may pertain to Win10 (I don't have multiple monitors on my Win10)

Have you tested to see if this shows up? To do so, right click your taskbar and select Properties. Let me know what you find.

It seems they haven't included those options into Windows 10. Everything is exactly the same as on the picture, with the exception of the things that are in your red square. Nothing is there for me, just blank space. I use AMD catalyst to manage my taskbars, so it only stays on one monitor, however I also use DisplayFusion, but the taskbar option is set off.

Can you post a screenshot of what you're seeing with the taskbars and start button? You have taskbars on each monitor or no?

Just so I understand, you installed Start10 to use the Windows 10 Start menu? Windows 10 comes with a start menu already, so I'm not sure I follow.

Is your setup configured as eyefinity?

The default Win10 menu should appear on the monitor the start button that opened it is on, but if your monitors are being exposed as a single monitor then the menu may well be appearing far left on your 'monitor' as that's the OS default behaviour and completely expected as you only have the one monitor.  This would also explain why you are missing those other multiple monitor settings in the taskbar properties.

http://i.imgur.com/NECJH4u.jpg Here is the picture of my desktop, with the Windows 10 style start menu. The task bar is only on the middle monitor. The reason I got Start10 was in the hope that it would move the start menu from the left monitor to the monitor which has the taskbar, but it does exactly the same as Windows 10, which is what you're seeing on the screen shot. Nothing else is wrong, it's just annoying.

Yes, it is configured as eyefinity, and the windows detects the monitor as a single one. However my problem with the start menu appears only when using the Windows 10 style(Start10 or original Windows 10 both have the problem). It worked in Windows 8.1, and it works with all other start menus from Start10.

Here's my current desktop with the modern style http://i.imgur.com/IXWxGir.jpg , it works, but you can see the Windows 10 style in the link above, which doesn't work.

Unfortunately your issue is one that AMD would need to resolve as it is a limitation in their software rather than a bug in the OS (or Start10).  They seem to have moved the taskbar but completely forgotten about the menu itself.  To Start10 and the OS there is simply ONE screen so we do not have the information we need.  Start10 does not reposition the Windows 10 menu, it is simply left for the OS to position and the OS will correctly position it when there are multiple monitors exposed to it.  The other menus work as Start10 positions those based on where the taskbar is located as it is responsible for them.

On Windows 8.x we had to reposition the menu as it was fullscreen by default, but on Windows 10 there is no need as the OS already does things correctly.

Oh thank you for the explanation! I will go and report the bug to AMD, and hopefully they will resolve it. I'll be using the Modern style in the meantime, it works, and it's pretty cool too!