Version: 72.0.3612    11279.0.0 dev-channel bob test
Google input tools version:72.0.20181114.221567824

Steps；
1.Switch to any keyboard in pad mode
2.Tap ctrl+shift+space in keyboard to switch to another keyboard
3.Tap ctrl+space to switch back to just keyboard

Actual:
Shift key is still pressed down;

Expected:
with <shift> key as combined-function-key , <shift> should not be keep its pressed down status when switch back ;

Note:
If i press ctrl+shift+space key with physical keyboard, switch back to original keyboard, shift key will be released