Unreal Engine Issues
Unreal Engine Issues
Compile failure adding BTTask_RunBehavior C++ class to project
UE - AI - Dec 22, 2016Error message in log is:CompilerResultsLog:Error: Error MyBTTask_RunBehavior.cpp.obj : error LNK2001: unresolved external symbol "public: virtual void __cdecl IGameplayTaskOwnerInterface::OnGameplay ...
Compute shader TAADilateVelocity crashes on macOS
UE - Platform - Apple - Oct 14, 2021Summary A licensee recently integrated the Oceanology 5 plugin from the marketplace and it triggered a crash on macOS/Metal.Platform The licensee is running macOS Bit Sur 11.5.2 on an AMD Radeon Pro ...
Take Recorder - Viewport Freezing and Performance Degradation When Recording Without Subsequences
zComponent - Archive - Apr 11, 2024Description: In Unreal Engine 5.4, when recording camera movements using the Take Recorder with the "Record Sources Into Sub Sequences" option turned off, significant viewport freezing and performan ...
Nanite Mesh Dither Opacity Mask Not Working in 5.6.0
UE - Graphics Features - Nanite - Jul 30, 2025In Unreal Engine 5.5.4, the Dither Opacity Mask option in a Masked material works correctly on Nanite meshes. However, in version 5.6.0, the dithering effect no longer applies to Nanite meshes. ...
Hot Reload changes actor focus from a component to its root
Tools - Mar 10, 2015When a hot reload occurs in the editor, if the component of a placed actor is selected then focus will switch from the component to the actor's root. This can be confusing when the root is a code c ...
Blueprints copied or moved to another level do not retain variable references to other Actors that are also copied or moved
UE - Gameplay - Blueprint - Apr 17, 2015Blueprints copied or moved to another level do not retain variable references to other Actors that are also copied or moved. Reproduced in 4.7.5 binary and Main (//depot/UE4/Promotable-CL-2507843) ...
Deleting class instance will call destructor for each instance of the class
Tools - Mar 11, 2015**UPDATE** When the actor is pulled from content browser to scene, a "ghost" object is created even if the actor is still being "held". Dragging the actor back and forth into the editor viewport wi ...
Blueprint navmesh modifier does not update navmesh in level
UE - AI - Jun 21, 2015CrashReporter: [Link Removed] The Navmesh Modifier Component in blueprints does not properly update a levels navmesh. ...
Application is crashing on the HTC One when UMG is used in the project
UE - Platform - Mobile - Jan 26, 2015If you include UMG in your project and deploy to an HTC One, the project will crash on the device. Tested this on multiple devices (Galaxy S5, HTC One, NVIDIA Sheild tablet) Monitor logs are atta ...
Changing the value of a text struct variable inside a duplicated function that contains a Make Struct node will reset that value in the original function
UE - Gameplay - Blueprint - Mar 11, 2015Changing the value of a text struct variable inside a duplicated function that contains a Make Struct node will reset that value in the original function. This does not appear to occur with other va ...