Abnormal operation Cached Pose and Reroute Node

The problem with Reroute node. It blocks the Cached pose.
The changes are reflected in the screenshots.

Normal service:

Adding a Reroute node, it works:

Disable output leading to the final:
Animation does not pass.

Harvesting Reroute node. Everything works properly!
WHY?

I found a solution(I stood Reroute nodе), but I’m sure that this small bug.
And many may not like it, because not everyone will understand what’s going on.
If necessary, I can upload the project, just ask.

Hi Miheev2,

Thanks for reporting this. I’ve entered UE-35557 in our system. This is a regression (meaning the bug was not in 4.12) and hopefully that makes it a priority for a hotfix. I can’t promise that though.