I’m using Modular Rig to build out a control rig for a quadruped however I’m running into a number of issues with bone flipping and what looks like problems with the IK solver. I’ve checked orientations and everything and the skeleton has worked in 5.7 so my guess is this is a bug in 5.8.
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Applying the horizontal spine module causes rotations in the spine bones that aren’t the default. These rotations can even be seen in FK mode when it’s set to default to IK.
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There are further unexpected rotations when I manipulate the controls. For example, the hip seems to have it’s rotations inverted where rotating the controller back causes the hips to rotate forward and left causes them to rotate to the right.
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Moving the IK controls close to each other seems to cause and accordion-ing of the spine rather than a smooth curve or squashing.
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A number of controls like main_ctl move the other controllers however they do not seem to affect the deformation skeleton.
These don’t appear to be issues I was running into in 5.7, they seem to be new in 5.8. If I had to guess, it appears to be a solver issue but wanted to flag that here.