Clicking on the 'Add/Remove Multiple' button in a glide_list type field (watch list, work notes list, etc...), it will save the current record while navigating away

Build information: 
Build name: Istanbul
Build date: 02-24-2017_1059
Build tag: glide-istanbul-09-23-2016__patch3-02-08-2017
 
Issue Description:
When clicking on the 'Add/Remove Multiple' button in a glide_list type field, it will save the current record while navigating away. So if there is a mandatory field not filled in, it won't allow you to modify the glide_list field with multiple values.  Other field changes to the record, including journal field entries will be saved/updated.

1. Navigate to an incident record
2. Remove the value from the 'Caller' field leaving it blank
3. Expand the 'Watch list' field and click on the 'Add/Remove Multiple' button

This Problem has been classified as a Product Enhancement and is under review.  To receive notifications when more information is available, subscribe to this Known Error article by clicking the Subscribe button at the top right of the article.