OS: Windows 10 64-bit
GPU: NVIDIA GeForce GTX 1070 x2
RAM: 16GB DDR3
CPU: AMD FX-8350
Broken: 2.79 (6f633de)
Worked: Latest stable 2.78 release. Also worked in the 2.78.5 (7b25ffb) experimental build that included the 2.79 features for Denoising and the Principled Shader
Short description of error
Introduced in 2.78, enabling stretching in the IK settings (the bottom slider) allowed bones to stretch only on the Y-Axis. I took advantage of this heavily when I found out about this, but in any 2.79 version released up to this point, the stretching seems to have reverted back to how it worked before 2.78 where bones will enlarge on all axis. This can be seen in this Youtube Video. This stretching reverting back is breaking all of my animations I have done in the past year as the limbs now awkwardly enlarge when I originally had them stretch only on the Y-Axis.
Exact steps for others to reproduce the error
- Create a simple IK rig. Only two bones are necessary. The deform bone, and the IK bone.
- Enable IK stretching by moving the stretching slider to be above 0.00.
- In most versions of 2.78, the base deform bone should only stretch along the bone's local y-axis. In the latest stable and development version of 2.79, the base deform bone will simply just enlarge (scale) on all local axis.