Visual Studio Code Review Difference Window
There should be a button on the toolbar like this one that will let you select the 4 different "diff modes".
You can also use the following keyboard shortcuts:
-
Ctrl+\
,Ctrl 1
- Inline -
Ctrl+\
,Ctrl 2
- Side-by-side -
Ctrl+\
,Ctrl 3
- Left Only -
Ctrl+\
,Ctrl 4
- Right Only
to change the view.
Below screenshot will help in setting the option to compare side by side.