[core] Pie slices shrink after wrong timing of resize of the pie

I built a pie chart and when I hovered over the slices, some of them (upper left only), shrank.

This seems to happen if you have more than 5 slices. For example, with this query, 3 slices will shrink when you hover over it.

SELECT startstation, endstation, count(*) AS trips
FROM biketrips
GROUP BY  startstation, endstation
ORDER BY trips desc
LIMIT 8;