Updatemenu scroll handle has the wrong size

[alexcjohnson]

(Edit: this has been fixed for legend, still an issue for updatemenus)
Look for example at the legend_scroll mock: there are 23 traces, and 13 are visible at a time in the legend. So the scroll handle should take up ~13/23 of the legend height. But it looks like it just has a fixed height of 20px (which might be reasonable as a minimum in case the legend is absurdly long relative to its viewport, unless the viewport itself is super small, then the minimum might drop to half its height?)

I think updatemenu scroll handles do the same thing but have not observed it.

[n-riesco]

@alexcjohnson Both legends and updatemenus use constant-sized scrollbars.

[alexcjohnson]

Thanks @n-riesco - It's not super high priority (I called it a bug not because it's broken, but because it's different from basically every other scrollbar out there), but do you want to take this one when you need a break from other work? Should be easy...

[n-riesco]

@alexcjohnson sure, I can look into it (as long as this isn't urgent).

[alexcjohnson]

#2426 fixed the legends part of this.
Updatemenus do have this problem too, so leaving this issue open.

[gvwilson]

Hi - this issue has been sitting for a while, so as part of our effort to tidy up our public repositories I'm going to close it. If it's still a concern, we'd be grateful if you could open a new issue (with a short reproducible example if appropriate) so that we can add it to our stack. Cheers - @gvwilson