reset height to auto to allow inline editor to layout
remove use of ems. not necessary to fix the vscrollbar bug in #2830.
remove height auto
Merge branch 'master' into jasonsanjose/issue-2830
Merge branch 'master' into jasonsanjose/issue-2830
Merge pull request #2958 from adobe/jasonsanjose/issue-2830

Fix vscrollbar in inline editor when increasing font size