Hello.
The feature should still work on Blender 5.1.2. It is disabled by default though, you just need to toggle it on, and changes to bone settings will be applied to all selected bones. Keep in mind that properties like enabling tail & head, and mute bone, are intentionally not synced.
If you've already enabled it and bone settings are still not being synced, please open an issue on GitHub, so i can give it a proper follow up.
Works for basic transforms but not for custom properties driving shapekeys.
Python: Traceback (most recent call last): File "C:\Users\AppData\Roaming\Blender Foundation\Blender\5.1\extensions\blender_org\node_annotator\refactor_ops.py", line 88, in poll type_ok = path_utils.suitable_group_type(tree.type) is not None ^^^^^^^^^ AttributeError: 'NoneType' object has no attribute 'type'
Should be fixed in the new version now, i appreciate your patience. If its not fixed; post the issue into GitHub - its easier for me to keep track of bugs and see them faster
Currently Auto Sync Bones does not work with 5.1.2. Everything else seems to work fine but if you select multiple bones and adjust settings, only the active bone will be adjusted. You gotta do blenders native Alt + Click to set settings or enable bones for multiple selected bones.
It'd be a perfect 5 star addon if not for that. Haven't ran across any other bugs. yet.