Unreal Engine Issues
Unreal Engine Issues
BP multi-level inheritance does not correctly inherit 'Static' mobility
UE - Framework - Blueprint - Sep 8, 2022User reported an issue of a mesh not being visible when a project has multi-level blueprint inheritance. After reproing, I believe the root cause is DefaultSceneRoot of the grandchild BP class not c ...
Using the end of the curve as a weighted tangent does not yield the expected value.
UE - Anim - Runtime - Oct 16, 2023When changing the tangent value, the last value is sometimes not 1.0 [Reproduce sample project] [Link Removed] ...
UEditorValidatorBase::ValidateLoadedAsset() is not using the K2_ValidateLoadedAsset() output, effectively ignoring the Blueprint validation
UE - Editor - Content Pipeline - May 1, 2025UEditorValidatorBase::ValidateLoadedAsset() is not using the K2_ValidateLoadedAsset() output, effectively ignoring the Blueprint validation. The K2Result is not used later in the function, and this ...
[CrashReport] Linux crash - /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so()
UE - Platform - Linux - Nov 16, 2017This is a new Linux crash in 4.18.1. There are a few similar but different callstacks that reference dri/radeonsi_dri.so() I've attached a log, but none of the ones I've looked at appear to contai ...
SIGSEGV: invalid attempt to access memory at address 0x3
UE - Platform - Apple - Jan 30, 2015Crash Report: [Link Removed] ...
EQS Generators named "NewBlueprint" cause errors and crash
UE - AI - Feb 11, 2015Naming an EnvQueryGenerator_BlueprintBase derived BP "NewBlueprint" and deleting it causes new custom generators to not appear in the EQS. This can also lead to a crash when searching for the new ge ...
New Material Thumbnails are appearing distorted
UE - Rendering Architecture - Materials - Jun 1, 2016When creating a new material the thumbnail will start out as the default material sphere but then quickly appear distorted, almost like its zoomed in really close. This does not affect already creat ...
Open Level is not working properly on mobile devices
UE - Foundation - Core - Cooker - Dec 28, 2015Projects created with an 'Open Level' node added within their blueprint are not working correctly on mobile devices. They do however work on Mobile PIE, PIE and Windows. Occurs on: 2894_SamsungGala ...
Scrolling the mouse wheel slowly on Mac does not have any effect in the editor
UE - Platform - Apple - Jan 19, 2017REGRESSION No, occurs in 4.14.3 On Mac, scrolling slowly (one or two notches) does not have any affect in editor, whereas on the Windows, this has full effect. This was seen in editor (with scroll ...
Shortcut(Ctrl+W) do a duplicate action in Blueprint Interface function list even if threre is no duplicate/copy action in the context menu.
UE - Gameplay - Blueprint - May 10, 2017Blueprint Interface functions have no duplicate/copy context menu but still shortcut (Ctrl+W) is working and making duplicated arguments. ...