In Blender 4.4 (since commit 00a8d006fe), polyline shaders stopped
using geometry shaders and now rely on SSBOs.
In C++, workarounds allow these shaders to function as before, albeit
with some limitations.
To address these known limitations, error messages are now raised when
a polyline shader is used with unsupported configurations.
Pull Request: https://projects.blender.org/blender/blender/pulls/131055
179f2a3cb1