I created a custom validator for a multi-list field which checks the number of selected items based on the min and max count set in a configuration item. On debug mode, the validator is being called and is returning the expected results. Sitecore also displays the pop-up message saying that validation errors needs to be resolved first before the item can be saved. However, the red vertical line displayed on the left side of the field along with the custom validator's error message are not displayed realtime (they only get displayed when i click the top right part of the content tab - the side where small red / yellow boxes appears when there are field errors). I've added the validators for all validation rules fields (such as quick action bar, validate button, validator bar, and workflow).
Am I missing any configurations? How could we trigger Sitecore to display the validation message realtime?
Note: I've tried creating custom validator using Sitecore 8.0 and it's working as expected. Issue occurs when I'm using Sitecore 8.2 Update 4.