Thanks a lot for the reproduction steps! I see there are definitely some things wrong with paths. We just released 3.7.47-beta, which fixes some very important issues (undo could leave a mesh, path, bounding box, or clipping attachment in a bad state, and some crashes) but doesn't address the path problems. We'll get to that first thing in the morning (it's past 1am here already! where did my day go?!).
We recently made some big changes under the covers. A lot of things are much better, but some other things broke in unexpected ways. We'll get it sorted out ASAP! Sorry for the trouble. If needed, you can always go back a few versions, before these changes (eg, 3.7.45-beta), so your productivity doesn't suffer.
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