It's a follow-up for T200416: CX2: Identify section types to exclude from MT abuse test .
Some sections - e.g. article title, sections title, infoboxes etc - are excluded from MT abuse calculation. But the progress bar would count them as MT.
The following case is possible - a user use MT for the excluded section and the progress bar will indicate that his translation has 100% MT (which is logically correct. ). However, users may be confused why sometime 100% MT translation displays the warning and sometime is not.
It might be a good idea to also exclude MT translated specific section types from the progress bar calculation.