Problems With Mesh and Curves

[RSEhlers]

Yes, this is a known problem with extruded curves when they change directions…there are 10s’ if not a hundred help wanted with this…
Look into Z-curve-sweeper does a far better job on transitions like this and Geometry Nodes.

z-Curve-Sweeper for Blender 3.0+ (Curve-to-Mesh with superpowers)

Update: Face-Corner UV generation added for seamless UVs, thanks @quellenform for help. [Z-Curve-Sweeper] Available here for free: Does all the stuff from my previous node-groups (even-thickness, UV mapping, Z-Up project, etc.), and more (like curve-sweeps from points, profile curves output and mesh profile). Feedback welcome.