To reproduce: Use a keyboard configuration similar to:

XKBMODEL="pc105"
XKBLAYOUT="us,ch"
XKBVARIANT="intl,"
XKBOPTIONS="grp:shift_caps_toggle"

• In wlmaker, toggle using Shift+Caps. Keyboard layout is now ch
• Switch to VT and back (eg. Ctrl-Alt-F3)
• Keyboard layout is reset to us