Unreal Engine Issues
Unreal Engine Issues
Ensure condition failed / Crash on BP Compile after adding variable
UE - Gameplay - Blueprint Compiler - Jan 26, 2018Crash when compiling BP (containing user defined struct + object reference) after adding variable. ...
Crash force deleting blueprint being used as a Child Actor Component in an actor in the level
UE - Gameplay - Components - Mar 23, 2018REGRESSION: Yes, the crash does not occur in 4.18. A crash occurs when the user force deletes an actor blueprint that is being used as a child actor component in another blueprint that's in the lev ...
Child Actor Component outputs error when child class is set to empty using blutility
UE - Gameplay - Blueprint - Nov 30, 2017Child Actor Component outputs error when child class is set to empty using blutility I attached repro proj. ...
Crash deleting skeleton when it's being used in current level
OLD - Anim - Sep 6, 2016Crash occurs when the user deletes a skeleton while it is being used in the current level. If the skeleton is not in the loaded level, the crash will not occur. ...
Enabling Skeletal Mesh 'Per Poly Collision' crashes the Editor
UE - Simulation - Physics - Aug 20, 2018When a Skeletal Mesh isn't assigned, enabling Per Poly Collision on the Skeletal Mesh Component causes the Editor to crash. This issue was reported and tested in 4.20.1 (CL-4233996). This issue was ...
Switch Skeletal Mesh node crashes the editor if the blueprint is compiled.
OLD - Anim - Feb 8, 2016Switch Skeletal Mesh node crashes the editor if the blueprint is compiled after changing the mesh being called on node. Frequency: 3/3 CrashReporter: N/A NOTE: tied to [Link Removed], however on ...
Compiling blueprint with anim bp crashes editor in MathExpr exec
UE - Gameplay - Blueprint - Jan 30, 2016Compiling a player character blueprint that is tied to an anim bp crashes the editor. Frequency: 2/2 Crashreporter: N/A ...
Getting Fullscreen or Windowed Resolutions doesn't fully execute on Linux
UE - Rendering - RHI - Oct 28, 2019When using "Get Supported Fullscreen Resolutions" on UE when built with Vulkan, no values are printed out. This is an issue with any platform that builds UE with -vulkan, not just Linux. In Engine ...
Crash w. 'Serialized Class LinkerPlaceholderExportObject for a property of BlueprintGeneratedClass'
UE - Gameplay - Blueprint - Sep 25, 2017I was attempting to repro [Link Removed]. I created a new Actor BP, placed it in the level, added a ref to it to the level BP (instead of the projectile approach in the repro), and tried to save my ...
Crash when saving after resetting Instanced array element via Property Matrix on placed actors
UE - Editor - Nov 21, 2025When an Actor Component contains an Instanced UObject array marked EditDefaultsOnly, adding a new element to the Blueprint defaults correctly updates the Blueprint and its own Property Matrix. Howev ...