Having an issue with slots. On a drawing with several slots, all 3mm, only a few actually appear to be editable.
I’ve checked there are no extra nodes or rounded corners in the drawing. The drawing seems to be closed as I only see one green node. No errors are present in the dialog box.
There are several unique issues with the various slots. Here are some of the things that I saw:
Slots must be made up of only lines. I saw at least one slot where one side was actually a curve.
Some of the slots have two very tightly spaced nodes at the corners. Delete the extraneous nodes.
I found one oddly formed slot where one corner of the slot had 2 overlapping nodes.
You can easily cleanup all of these issues by going to Edit->Optimize selected shapes and doing a very conservative “Fit shapes to lines”. That should cleanup most of the slots without distorting the shape too much.