version 52.0.2723.0 canary
Platform 8274 clapper
Firmware Google_Clapper.5216.199.7

 
REPRO STEPS:
1. Enabled <Show expanded input options in the shelf> in setting page
2.Open opt-in menu 
3. Click any input tool
4. Put input focus in any input box
 
ACTUAL RESULTS
No any keyboard layout pop up 

Expected:
Should pop up related input tools keyboard;