**Steps to reproduce:**
# Open https://en.wikipedia.org/wiki/List_of_countries_by_infant_and_under-five_mortality_rates?veaction=edit in the visual mode. Scroll down to the CIA Factbook section.
# Before doing any editing, note the increase in the height of the empty header cell above the row number column. The rows no longer align across the table.
# Type a different number in several of the cells in the "2017" column.
# Publish > Review your changes > Switch to the visual diff
**Expected results:**
All rows will look the same height.
New content will be highlighted.
**Actual results:**
The rows that you just added content to are taller than the others. (This is made more obvious by the presence of the row number column on the left.)
New content is not highlighted.
Screenshot at https://www.mediawiki.org/wiki/File:VE_review_of_addition_of_last_3_2017_numbers.jpg
Reported by @Timeshifter at https://www.mediawiki.org/wiki/Topic:Uhevp8skbmtz0hn9