column with comment are show in various places in phpmyadmin (dashed underline and comment on hover).
the same behavior could be used for tables at least in the navigation panel and maybe in db_structure.php. it's already visible when we select the table but not before
Ticket moved from /p/phpmyadmin/bugs/4101/
Diff:
Considering the performance of the navigation tree, tool tip feature is removed from navigation tree. See https://github.com/phpmyadmin/phpmyadmin/pull/646
Tool tip is applied to db structure page with https://github.com/phpmyadmin/phpmyadmin/pull/816 and will be part of 4.2 release.