Strange looking legend for tiles

[IKrukov-HORIS]

Sometimes legend for tiles looks like this:

Example:

d = { 'x' : [1], 'y' : [1], 'c' : [0]}
ggplot(d) + geom_tile(mapping=aes(x='x', y='y', fill='c', color='c')) +
scale_color_brewer(name = 'c', palette='Spectral') +
scale_fill_brewer(name='', palette='Spectral')

[alshan]

Bug: In scale_xxx() parameter name='' has the same effect as guide='none' - hides the legend.
Expected: parameter name='' should only remove the legend title.