Hey Adrian.
There’s 2 potential issues that might cause this, and yes, it’s most likely to do with the rescaling of the armature.
It’s either an issue with the object scale, or the stretch-to constraints on the generated rigify rig.
If you are using rigify, try disconnecting all the parenting on the geo so it’s no longer parented to the rig (and delete the armature modifier)
Then scale the meta rig to the correct size > regenerate > then reparent the geo to the generated rig.
Another thing you can try is to reset the length of the stretch-to constraints on the generated rig.
But I feel like regenerating the rigify rig will be easier in your situation.
Let me know how it goes.
