Matrix settings do not persist through reboot

I’m having a bit of trouble with 2D matrix. I’m using 0.15.0, and I have a 32x32 panel. I can set it up as a 2d matrix, after I do so I get the 2d effects and when I use them they look like they are supposed to. But I can’t get the configuration to persist through reboot - it looks buggy, my segment comes with stopx of 1024 and stopy of 1. And despite the fact that is is still in matrix mode, albeit a really bad one, I don’t see the 2D effects populated.

I’ve really tried a lot of different things to try to get this working, but thought I would check here before opening an issue on Github. Because this seems like something everyone would want to do, the fact that I can’t get it to work makes me thing it is me, not WLED.

Answered on Github, reposting here for posterity.

Use “width” and “height” properties in ledmap.json. See KB.