Option to show custom TU fields (normally optionally displayed in the Custom Field Values column in the TM side-by-side editor or Concordance windows) in the same area as the default TU fields are shown. That is: in the bottom bar of the window. The way that custom fields are shown (in an extra column added to the window) messes up the visual layout of the windows. 

Relevant settings currently accessible at:

File > Options > Editor > Concordance Search Window
[x] Show translation unit field values
Number of fields to show: [x]

File > Options > Editor > Translation Results Window
[x] Show translation unit field values
Number of fields to show: [x]