I found that the group function in edit section where I’m editing my designs not working since yesterday 8/29 (my time zone). I thought it was just a glitch, but it happen again today, 8/30.
I’ve just tested it (firefox/windows) and it groups if you have more than one layer selected.
It doesn’t group if one of the layers is tiled (source me - just tested tiling a layer and grouping with a none tiled)
This could be by design and Z don’t want you grouping tiled layers maybe?
It was more than one layer. I saw today it works again.