Lock animation in PhysicsAsset editor

I’m setting up the physics for a character ragdoll in UEd 4.19.2

I have an animation and my skeletal mesh starts ragdolling in the last frame. I’m in the process of tweaking the constraints but due to an apparent bug this is super cumbersome!

This is what I would like to do:

  1. I open the PhysicsAsset of my skeletal mesh
  2. I select the preview animation
  3. I pause the animation and select the last frame
  4. I select relevant bodies and simulate those selected bodies to see if their constraints are set up correctly
  5. Stop simulation tweak constraints, repeat step 4 and 5 until everything is set up correctly.

However I find the following this go wrong:

In step 4 if I have an animation loaded it will jump back to reference pose as soon as I select more than one body. (EDIT: By selecting bodies in the viewport, it doesn’t do this when selecting them in the skeleton tree)
In step 4 if I tweak transforms of bodies or constraints it will jump back to reference pose
In step 5 if I stop the simulation it will jump back to reference pose

After the editor has jumped back to reference pose, I cannot select my initial animation. I first need to select another animation (or press the reference pose button) before I can select my animation again. Then I need to manually select the correct frame again.

Is there a way to lock the preview animation so that it doesn’t keep jumping back to reference pose?