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Tech Note: split pins in anim state machines fail to compile

Dec 8, 2021.Knowledge

Description
A bug has been found in the anim blueprint compiler which results in split-pins on animation nodes within a state machine failing to compile. Any values being used to drive these pins will be ignored at runtime.

Potential Impact
Moderate: Animation nodes within state machines will not behave as expected when split pins are used.

Solution:
The issue will be fixed in the 4.26.2 release. The CL for the change is 15749279.