Unreal Engine Issues
Unreal Engine Issues
Changing BlueprintCallable function's code results in Warning in blueprint that should be considered an Error
UE - Gameplay - Blueprint - May 3, 2016A user reported an issue where, if a BlueprintCallable function's parameters are edited, a blueprint using a BlueprintCallable function will give warnings instead of an error for a problem after the ...
Adding an Actor Component that is set to Replicate to an Actor that is also set to Replicate disconnects the Client from the Server
UE - Networking - Feb 25, 2016Adding an Actor Component that is set to Replicate to an Actor that is also set to Replicate disconnects the Client from the Server. Note: this does not occur if the Actor Component is already added ...
Crash occurs when diffing blueprint that has had one of its variables changed to a Soft Object Reference
UE - Gameplay - Blueprint Editor - Oct 3, 2017A crash occurs when diffing a blueprint that contains an array that has changed from an Object Reference to a Soft Object Reference. Note: I figured that this could be related to another bug that I ...
Atmospheric Fog Sun Disc Has Wrong Intensity
UE - Graphics Features - May 4, 2018This behavior has been observed in 4.18.3, 4.19.2, and Main (CL 4048405). Note that adding BP_Sky_Sphere to the scene and assigning the Directional Light Actor to it will fix the issue. Per User: ...
Atmospheric Fog Sun Disc Has Wrong Intensity
UE - Graphics Features - May 4, 2018This behavior has been observed in 4.18.3, 4.19.2, and Main (CL 4048405). Note that adding BP_Sky_Sphere to the scene and assigning the Directional Light Actor to it will fix the issue. Per User: ...
Device Token can not be Acquired When Remote Notification on iOS
UE - Platform - Mobile - Dec 3, 2018I received a report that there is a situation in UE 4.21 that it is not possible to acquire push notification device token on iOS And they seem to have solved the problem by fixing the following pa ...
SynthComponent does not execute OnStop() after calling Stop()
UE - Audio - Nov 26, 2019SynthComponent does not execute OnStop() after calling Stop(). OnStop() will be called in PumpPendingMessages() via OnGeneratePCMAudio(). But after stopping the AudioComponent, the procedural Sound ...
Crash when plugging Depth Fade to Base Color and using Required Texture Resolution mode
UE - Graphics Features - Dec 1, 2020Crash when plugging Depth Fade to Base Color and using Required Texture Resolution mode Hi, We have a material that uses the Depth Fade node for the Opacity and Base Color. However, the engine cras ...
Niagara preview viewport and timeline are locked to 30fps
UE - Niagara - Aug 10, 2020The Niagara preview viewport seems to be fixed at a 30fps update time, which makes it difficult to fine-tune short lifetime FX. It would be good to either have options for viewport max fps, or for s ...
[AI] UE_MT_SCOPED_READ_ACCESS(NavElementAccessDetector) Fails in editor on fresh sync
UE - AI - Navigation - Jan 27, 2025Licensees have reported failed multi-thread access code for NavElementAccessDetector in complex levels that have not finished compilation of their static meshes. The eventual failed check is inside ...