Point is not drawn if hovered repeatedly

[strepon]

I noticed that hovered points are not drawn correctly if they are visited repeatedly after hovering out of a plot. It happens only if there is the option live: false set for the plot legend.

This can be observed e.g. in the bar plot demo:

1. Place cursor left of the first plot.
2. Hover the first green bar in the plot. -> "Point" (an ellipse in a lighter color filling the bar) is drawn.
3. Move cursor to the left out of the plot. -> The "point" disappears.
4. Move cursor back to the green bar. -> No "point" is drawn.

After hovering another value (e.g. the second bar), the point appears again.