"Detaching from existing linker" Error

I suddenly get these crashes alot after I changed a scrollbox status from “visible” to “self hit test invisible”. I had that before in an unrelated pak I bought from the marketplace, which I dont use anymore and was not able to find out what this means and how to avoid it.
Is this a bug? I mean I am not doing anything out of the ordinary, so I would call this a bug. Any ideas?

Assertion failed: !HasAnyFlags(RF_NeedLoad|RF_NeedPostLoad) [File:C:\Program Files (x86)\Epic Games\4.14\UnrealEngine-release\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectLinker.cpp] [Line: 102] 
Detaching from existing linker for ../../../../../../../Data/Mikaboshi2/UnrealProjects/Client/Content/Client/UserInterface/HUD/Chat/ChatWindow3.uasset while object K2Node_CustomEvent /Game/Client/UserInterface/HUD/Chat/ChatWindow3.ChatWindow3:EventGraph.CharacterSaysText_1 needs loaded
UE4Editor.exe has triggered a breakpoint.

Hello Wallenstein,

I was not able to reproduce your crash on our end. I have a couple of questions that will help me narrow down your issue:

  1. Can you reproduce your issue in a new project?
  2. If yes, could you provide a detailed list of steps so I can reproduce your issue on our end?
  3. Could you provide screenshots of your issue?
  4. If this is not the full crash callstack could you post the full one?

Thanks!

No it is something that happens at some points in time and seems to be related to widgets somehow, I have no idea what triggers it

I have a couple more questions about your issue:

  1. Is this the full callstack when the stack occurs?
  2. Does your projects use widgets?
  3. If so, what are you using the widgets for?

Thanks!

Hello Wallenstein,

We have not heard back from you in a few days, so we are marking this post as Resolved for tracking purposes. If you are still experiencing the issue you reported, please respond to this message with additional information and we will follow up.