UE4.18 Crashes when swapping around root components

When I swap around 2 Components, in this case, a box collider that was the root and a paper sprite component, and build, the unreal editor crashes.

What I did was change RootComponent = Collider to RootComponent = Sprite and
Sprite->SetupAttachment(RootComponent) to Collider->SetupAttachment(Sprite).

After doing these changes and building the solution UE 4.18.3 crashes.

Hello,

We’ve recently made a switch to a new bug reporting method using a more structured form. Please visit the link below for more details and report the issue using the new Bug Submission Form. Feel free to continue to use this thread for community discussion around the issue.

https://forums.unrealengine.com/unreal-engine/announcements-and-releases/1410408-unreal-engine-bug-submission-form

Thanks