it used the 'global' (Pose Space) rotation to define the action timing.
That was of course hardly useful, reason for many weird patched rigs.
Nevertheless, sometimes it can be useful, and it's nice to see old files
nicely work still. So: "Local" is an option now.
Note: if you changed last week files because of the new action constraint,
set the new "Local" option in the object-buttons Constraint panel.
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