Perspective Power Chart - "More" Popup Menu is Blank

Hi everyone,

I am experiencing an issue on the power charts in a Perspective project I am working on.
The “More” popup menu in the top right corner of the chart only shows a blank square when it is clicked.
This problem is happening on all of the charts I have in this project.
When I click on this square, it does work, and downloads a CSV export like it is supposed to. But does not display anything.

image

What would be the cause of this, and is there a way to get this fixed up and showing the text (or icon) like it should be?

The gateway is on version 8.1.17.
Thanks in advance.

The “More” button should be providing options to Export or Download the displayed data, and in scenarios where x-traces or range brushes are applied, you should be able to clear those applied features. If you examine the Developer Console, do you see any errors/exceptions being logged? Which browser is this in? Do you have custom theming applied?

If you’re familiar with using the browser’s developer tools, do you notice anything odd while inspecting the area which should contain the aforementioned options?