Unreal Engine Issues
Unreal Engine Issues
[AI] SmartObject with Precondition in a persistent collection crashes editor when exiting PIE
UE - AI - SmartObject - Sep 26, 2023Adding 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, 2014BlueprintNativeEvents (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, 2016App 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, 2016I 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, 2017This 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, 2017No additional ticks appear on the timeline when you zoom in Regression: YES Worked: 3172292 (4.13.2) Broken: 3249277 (4.14.3) ...
PlacedEditorUtilityBase class no longer ticks in the editor
UE - Gameplay - May 30, 2018This is a regression as it is working as expected in 4.18. When using the class PlacedEditorUtilityBase to draw a debug sphere, it doesn't appear in the editor in 4.19 and 4.20. ...
There is a moment of T pause when Post Roll Frames is enabled and snapping is enabled
UE - Anim - Sequencer - Apr 19, 2021When 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 ...
Rotator visual helper appears in local Presentation exports
TM - Tools - Nov 6, 2025Reported in SF [Link Removed] The Rotator animator's visual helpers will be visible in locally exported Presentations when it should be hidden. This does not affect the Translator animator. ...
Crash launch application adding .umap url
UE - Foundation - Core - Aug 6, 2020The 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 ...