Steps to reproduce

1. Decorate stories app to add a twin column field as a new block. The existing decoration in /travel-demo-stories-app/decorations/stories-app/apps/stories.yaml can be modified to reproduce this bug as follows:

   subApps:
     editor:
       form:
         properties:
           relatedContent:
             properties:
               tours:
                 label: stories.editor.relatedContent.tours.label
                 $type: jcrMultiValueField
                 buttonSelectAddLabel: stories.editor.relatedContent.tours.add.label
                 field:
                   $type: linkField
                   chooserId: stories-app:chooserTours
                   datasource:
                     $type: jcrDatasource
                     workspace: tours
                   buttonSelectNewLabel: stories.editor.relatedContent.tours.browse.label
               twinSelect:
                 label: Groups
                 $type: twinColSelectField
                 leftColumnCaption: "Available groups"
                 rightColumnCaption: "User is member of"
                 datasource:
                   $type: jcrDatasource
                   workspace: usergroups
                   allowedNodeTypes:
                     - mgnl:group
           blocks:
             blocks:
               - text
               - image
               - video
               - externalLink
               - date
               - tour
               - twinSelect
   permissions:
     roles:
       travel-demo-publisher: travel-demo-publisher
       travel-demo-editor: travel-demo-editor
   

2. Make use of the new column field by moving values from one column to another

Expected results

Twin column field can be used without any issue

Actual results

Focus is lost and scroll moves in a jump. This is more noticeable in smaller screens (laptop) than in bigger ones, where the jump is lighter.