Axiom chart: a trend whose band is linked to a hidden trend vanishes

In Application Trend Graph, a trend whose band is linked to a hidden trend vanishes from the plot and legend, and Trend Properties doesn't show the link

Version: Axiom 26.8.0.26287

What happens
A trend whose band is linked to a hidden trend (Show Trend = off) is not drawn and is not listed in the legend, even though its own Show Trend is on. Its Trend Properties then show Band = Manual and Scale = Auto. Nothing in the UI shows why the trend is missing, and the link can't be seen or removed from that dialog.

Steps to reproduce
1. Create a chart with trends A and B. Link B's band and scale to A.
2. Turn off Show Trend on A.
3. B disappears from the plot and the legend. B's Show Trend is still on.
4. Open Trend Properties for B: Band shows "Manual", Scale shows "Auto". The saved chart still has B linked to A for both band and scale.
5. Turn Show Trend back on for A: B reappears, and its Band and Scale now show A.

Expected
Either B stays visible when the trend it's linked to is hidden, or Trend Properties shows the real link (for example "A (hidden)") so it can be changed.

Workaround
Turn on Show Trend for the hidden trend, change the linked trends' Band and Scale to something else, then hide it again.

Example: The Band on these 6 trends are linked to SCAREDDOG, which has Show Trend = false. You can see Band and Scale Range don't show the link.