Product Version: 66.0.3359.67 beta 
UI Language: en-US 

Description: 
It appears that deselected US keyboard comes back without any user action? 

I have added "US Extended" and "Japanese" to the default and then   
deselected "US".  The setting was saved fine and Ctrl-Space have toggled   
between them (also, clicking bottom-right corner and checking the Input   
method used to show only these two). But after a lid-open-wakeup this   
morning, I saw US enabled. Going to Settings->Languages and input/Input   
Method shows only "US Extended" and "Japanese" (which is correct), and   
Manage Input methods also shows "US" deselected. 

Product Specific Data (whitelisted): 
        CHROME VERSION: 66.0.3359.67 beta 
        CHROMEOS_AUSERVER: <URL: 2> 
        CHROMEOS_RELEASE_BOARD: coral-signed-mp-v5keys 
        CHROMEOS_RELEASE_DESCRIPTION: 10452.30.0 (Official Build) beta-channel   
coral-unibuild (astronaut blacktip blue bruce coral lava nasher nasher360   
porbeagle robo robo360 santa whitetip) 
        CHROMEOS_RELEASE_TRACK: beta-channel 
        CHROMEOS_RELEASE_VERSION: 10452.30.0 
        ENTERPRISE_ENROLLED: Managed 
        cpu: Intel(R) Celeron(R) CPU N3350 @ 1.10GHz 

        expi:  3300108 3300131 3312846 3313322 
        hardware_class: BLACKTIP C2I-A2I-A2B-R76-A4Z 
        routes: default via <IPv4: 17> dev wlan0 metric 1 
<IPv4: 38>/24 dev wlan0 proto kernel scope link src <IPv4: 1>0 
<IPv4: 15>/30 dev arcbr0 proto kernel scope link src <IPv4: 8>


https://listnr.corp.google.com/report/85246954056