[AI] SmartObject with Precondition in a persistent collection crashes editor when exiting PIE

UE - AI - SmartObject - Sep 26, 2023

Adding the Precondition to the SmartObject caused an assertion when it was part of a persistent collection. The precondition needs to be able to pass its Activate method to cause the assert. This b ...

BlueprintNativeEvents with no return value (void) cannot be overridden in Blueprints.

UE - Gameplay - Blueprint - Dec 22, 2014

BlueprintNativeEvents (and BlueprintImplementableEvents) are not available to be overridden in a Blueprint Graph if they do not return a value. This affects both functions present in source code, as ...

App crashes when walking off the edge of the platform in QAEntry on tvOS and iOS

UE - Simulation - Physics - Oct 10, 2016

App is crashing when walking off the edge and the player ragdolls tvOS 10.0 iPhone6S+_6241 OS: 9.3.5 Did NOT occur on SamsungS7_8344 ...

Ensure after adding BlueprintCallable to a function and compiling the BP in the editor

UE - Gameplay - Blueprint - Nov 29, 2016

I am seeing an ensure after adding a UFUNCTION(BlueprintCallable) accessor and then adding that function to the BP and compiling the BP in the editor. Repro frequency is only 3/6 times. ...

Crash after entering DebugCreatePlayer console command on Sierra Mac in -game

UE - Graphics Features - Jan 18, 2017

This is a regression from 4.14.3 This crash does NOT occur in PIE or Standalone Game This does not occur on an El Capitan 10.11.6 MacbookPro or on Windows. ...

No additional ticks appear on the timeline when you zoom in

OLD - Anim - Jan 26, 2017

No additional ticks appear on the timeline when you zoom in Regression: YES Worked: 3172292 (4.13.2) Broken: 3249277 (4.14.3) ...

Editor crash on loading a project after enabling the Tango plugin on Linux

UE - Platform - Linux - Aug 22, 2017

Enabling the Tango plugin on Linux causes the editor to crash on restart. Regression: No - Tango plugin not available in 4.16.3 (CL 3561208) ...

Crash when Landscape Max LODLevel is set to 0

UE - LD & Modeling - Terrain - Landscape - Mar 16, 2018

Reproduced in 4.19.0 CL 3944462 and 4.20 Main Unable to reproduce in 4.18.3 CL 3832480. This is a regression. ...

There is a moment of T pause when Post Roll Frames is enabled and snapping is enabled

UE - Anim - Sequencer - Apr 19, 2021

When I turn off snap, the problem does not occur The problem does not occur in 4.24.3 and 4.25.4 Occurs in 4.26.2 and UE4main ...

Crash launch application adding .umap url

UE - Foundation - Core - Aug 6, 2020

The application crashes when adding ".umap" to the launch map at application launch. If not specify ".umap", it will be able to launch application. There appears to be a failure to parse the URL. Th ...