Error when tooltip has variable mapped to aesthetic used by stat

[OLarionova-HORIS]

Using a tooltip (or annotation) with a variable mapped to the aesthetic used by the statistic gives an error.

For example, geom_pie() + 'count2d' with Aes.WEIGHT (to compute sum instead of simple count):

ggplot({
  'name': ['a', 'b', 'c'],
  'value': [1, 2, 3],
}) + geom_pie(aes(fill='name', weight='value'), tooltips=layer_tooltips().line('@value'))

Result: