Got an issue on Github for my node-red-contrib-ui-heatmap node. After some discussions and digging into the code, it seems there are a few things incorrect in my node. ut I'm running out of ideas ...
This is the first problem:
The node needs to be added to some group (which in turn is located on some tab):
But when you do that, my node doesn't become visible in the dashboard sidebar:
P.S. In the dashboard itself, my node is nicely visible in the specified group (and tab)...