Indent and tab size in MATLAB 2020a for livescript are working as expected.
You can check this by following below steps
- Go to Preferences/MATLAB Editor/Debugger Tab Preferences
- Set Indent size and tab size to 10 or above (to differentiate clearly).
- Create a new live script file and add this code if a==1 and hit enter.
Vary the indent sizes to get better understanding. Likewise, you can verify for tab option also.
Hope this helps.