cursor hover points are cut off at plot edges

[FrantisekPostl]

Hi, I'm using version 1.1.2 of uPlot and Chrome v85.0.4183.102. I have found that some points that are close to axis are not filled when you hover over them.

You can see it in demos too, when you zoom:

[leeoniya]

yes, this is a known issue.

the hover points are drawn in the DOM for performance reasons, and their .u-over container is overflow: hidden to allow hiding them and cursor by moving them to a negative position. unfortunately this also cuts them off at the boundaries.

in part, this is a performance optimization so that i don't have to do if (!visible) {point.classList.add("off")} on every mousemove.

i'll think a bit more about how to solve this efficiently.

[leeoniya]

this is fixed on master