See the fix for bug 589385

It is quit simple folks!
Just delete two lines in MainWindow.py

#cell.set_fixed_size(-1, 25)
#column.set_sizing(gtk.TREE_VIEW_COLUMN_FIXED)

Many users will be greatfull

These lines are not there anymore. Assuming fixed upstream.

Assuming something is not a correct response. If you are convinced of this fix, please let me know in what version of Alacarte and what release of Gnome it was distributed. 

some lines from Gnome 3.4: /Alacarte/mainwindow.py

def setupMenuTree(self):
		self.menu_store = gtk.TreeStore(gtk.gdk.Pixbuf, str, object)
		menus = self.tree.get_object('menu_tree')
		column = gtk.TreeViewColumn(_('Name'))
		column.set_spacing(4)
		cell = gtk.CellRendererPixbuf()
		column.pack_start(cell, False)
		column.set_attributes(cell, pixbuf=0)
		cell = gtk.CellRendererText()
		#cell.set_fixed_size(-1, 25)
		column.pack_start(cell, True)
		column.set_attributes(cell, markup=1)
		#column.set_sizing(gtk.TREE_VIEW_COLUMN_FIXED)
		menus.append_column(column)
		menus.enable_model_drag_source(gtk.gdk.BUTTON1_MASK, self.dnd_menus,

def setupItemTree(self):
		items = self.tree.get_object('item_tree')
		column = gtk.TreeViewColumn(_('Show'))
		cell = gtk.CellRendererToggle()
		cell.connect('toggled', self.on_item_tree_show_toggled)
		column.pack_start(cell, True)
		column.set_attributes(cell, active=0)
		#hide toggle for separators
		column.set_cell_data_func(cell, self._cell_data_toggle_func)
		items.append_column(column)
		column = gtk.TreeViewColumn(_('Item'))
		column.set_spacing(4)
		cell = gtk.CellRendererPixbuf()
		column.pack_start(cell, False)
		column.set_attributes(cell, pixbuf=1)
		cell = gtk.CellRendererText()
		#cell.set_fixed_size(-1, 25)
		column.pack_start(cell, True)
		column.set_attributes(cell, markup=2)
		items.append_column(column)
		self.item_store = gtk.ListStore(bool, gtk.gdk.Pixbuf, str, object)
		items.set_model(self.item_store)
		items.enable_model_drag_source(gtk.gdk.BUTTON1_MASK, self.dnd_items, gtk.gdk.ACTION_COPY)
		items.enable_model_drag_dest(self.dnd_items, gtk.gdk.ACTION_PRIVATE)

It was fixed as a part of a duplicate of this bug: https://bugzilla.gnome.org/show_bug.cgi?id=589385

It should be in alacarte 3.5.3, which I released a few days ago.

*** This bug has been marked as a duplicate of bug 589385 ***