I was set Alt + Shift to switch between Thai and US and works fine
But I need to use Alt + Shift + (other) key for VSCode but didn't work any help?
Look at this
CTRL + SHIFT + key when using CTRL+SHIFT to switch keyboard layout
, and at this
https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1245473
Workaround is to change Layout switch to Alt+Space or something...
Also there is another workaround for Ubuntu on the bottom of the page
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1683383
, but it doesn't works with eOS Juno beta 2.