My Rig Jumps when i switch Mode

The Problem is that your (green) Animation bones and your (blue/purple) Deform bones are not synchronized.

The simple fix – Use Workflow presets:

  • Select the Armature
  • Open the settings panel
  • Klick on the workflow preset “Joint Edit”
  • now do your editing work on the Armature
  • Finally go back to the settings panel
  • and klick on the workflow preset “Skin&Weight”

The expert fix – use Expert mode:

  • Open the Settings panel
  • Switch to Expert mode
  • Select the Armature
  • go to edit mode
  • Edit your armature as needed
  • Open the Posing panel
  • Store Joint Edits (Take care of the synchronisation direction, the double arrow right to the button)
  • if necessary adjust the settings in the operator panel (at the bottom of the tool shelf)