When developing new sections it's hard to guess right column widths and order without any data available.
When developer changes column width/position of columns in grid in unit config, then this has no effect in Admin Console, because they are already cached in UserPersistentSessionData table in database.
I'm proposing to add some new menu item under "View Menu", that only in debug mode would purge all grid-related info from UserPersistentSessionData table.