Did you, by any chance, use voice dictation on that last message. It reads "ship in the control key," which I take to mean SHIFT and the CTRL, but I'm wondering if you actually meant SHIFT+ALT?
WinKey+Spacebar appears to be the default, see: https://www.windowscentral.com/how-change-your-keyboard-layout-windows-10
and is the option documented on the keyboard shortcuts page for Windows 10: https://support.microsoft.com/en-us/help/12445/windows-keyboard-shortcuts
It also seems that SHIFT+ALT will work, see: https://answers.microsoft.com/en-us/windows/forum/windows_10-desktop/windows-10-keyboard-switch-language/f6473ac0-2006-4a51-aabe-124f4f1b3507
You can, of course, change the default, though and you have to have more than one language defined for the system to allow switching. I just haven't been able to find SHIFT+CTRL documented as an alternative.
Brian - Windows 10 Home, 64-Bit, Version 1803, Build 17134
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