I just purchased a Raspberry pi 400 and installed the 20.10 64 Bit mate. I cannot seem to be able to find the right keyboard configuration. I have selected US English and US Keyboard but once I log on the characters do not match the keyboard layout. I can type my name and password to login OK. The problem is after the logon is completed. I have switched to every single US english keyboard options and none of them seem to help. I switched to a new microSD card and installed fresh, same problem.
If I boot up to Raspberry OS, everything works fine. The keyboard shows as US English 105 intl but there is no such option under Mate. Any ideas?