Operating system: Windows-10-10.0.17763 64 Bits
Graphics card: GeForce GTX 1050/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 418.91
Broken: version: 2.80 (sub 60), branch: master, commit date: 2019-05-06 16:39, hash: rBc0432c2385e6
Short description of error
When using a material with an image texture and setting the extension mode to 'clip' the shader appears to assume the extension mode 'extend' instead.
Exact steps for others to reproduce the error
Add uv map
Create material with image texture using the UV map node as the image texture vector input
Scale the uv map down so that the image texture repeats
Change the image texture extension mode to 'clip'