Spline IK stretching bone (without Y stretching selected)
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Description

System Information
Windows 10
AMD Radeon HD6950
Core i5 4690k

Blender Version
Broken: 2.78c e92f235283

Short description of error
Bones using a spline IK constraint are y stretching.

Exact steps for others to reproduce the error
In attatched file, select either of the two curve control points.
Shorten the curve and see that the bones will squash inward up to a certain degree.

Details

Type
Bug

It seems that since the addition of the Spline IK without stretching feature, this was a known limitation - rB334a80a4f8a4
@Joshua Leung (aligorith), can you take a look?

Dalai Felinto (dfelinto) triaged this task as "Normal" priority.May 22 2017, 3:06 PM