In both skeleton and skeleton deformation, when I right click on a node, there no longer is the option to create a child bone… I tried restarting, didn’t change
The current development version (1.5.1) has the Skeleton Tool.
You should use it to create bones, try it out 
https://synfig-docs-dev.readthedocs.io/en/latest/projects/skeleton.html
https://synfig.readthedocs.io/en/latest/tools/skeleton.html
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I was using the development version, downgraded to stable, and now it’s fine
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