Disabling and enabling "Max Distance Only" under Distance Joint 2D throws runtime errors on changing length connection.

Steps to Repro:
1. Import attached package.
2. Open "DistanceJoint2D_MaxDistanceOnly" Scene.
3. Select in Hierarchy > Anchor 4 > Crate 4.
4. Inspector > Distance Joint 2D > Maximum Distance Only > Uncheck > Check > Play.
5. Drag Crate 4 towards the Anchor.

Actual Result:
Multiple errors are thrown.

Expected Result:
Crate can be dragged towards the Anchor.

Environment:
Windows and Mac

Occurring with:
2019.2.0a13, 2019.1.0f1, 2019.1.0a14

Working with:
2019.1.0a13, 2018.3.0f2