FYI, the first time you run HeidiSQL on a computer that has never used it before, the left column (showing database, tables, etc.) is too narrow to display any names... the space used by the tree, icon and size take away from the area for the text, so the text doesn't show up.
It's kind of confusing for new users to connect to a database and have it appear as though all the table names are gone.
Just a cosmetic issue, but I've seen numerous people confused by it.