X | X | X

this_word_has_no_breakable_spaces ... if this bug is still active and the window is >250px wide, you can't see that the word above is 33 characters long. (I could have used a table instead but this is simpler).

Try shrinking this table to ~250px wide. The left hand (gold) column will suddenly expand in width.
mozilla qa smoke tests smoke qa mozilla mozilla qa smoke tests smoke qa mozilla mozilla qa smoke tests smoke qa mozilla mozilla qa smoke tests smoke qa mozilla mozilla qa smoke tests smoke qa mozilla mozilla qa smoke tests smoke qa mozilla mozilla qa smoke tests smoke qa mozilla mozilla qa smoke tests smoke qa mozilla