CustomPress Breaks Jetpack (v4.5) Publicize

It would appear that Jetpack v4.5 changed something and that change has caused a conflict with CustomPress. When using Jetpack v4.5 alongside CustomPress, the Publicize module throws 404s instead of properly connecting to sharing services. This conflict is not limited to any one service, they all seem to suffer from this conflict.

e.g., clicking the "Facebook" share button generated by Publicize will result in a popup that 404s if CustomPress is activated; if CustomPress is not activated, the share button will properly created a popup and share on Facebook.