Unreal Engine Issues
Unreal Engine Issues
Timeline functions do not work inside of Blueprint functions
UE - Gameplay - Blueprint - Dec 20, 2014I could not repro their issue in main. They supposedly recently upgraded to 4.5. I was wondering if you could divide an conquer, and figure out when we fixed this. **EDIT** Was able to repro in mai ...
Cannot build a project containing a UFUNCTION that takes a pointer to a deprecated component as a parameter
UE - Foundation - Core - Jul 18, 2018If a UFUNCTION takes a pointer to a component as a parameter, the project cannot be built if the component's class is marked as deprecated. The error message that is provided states that the propert ...
Media Player Crashes Engine When Attempting To Preview Video In Editor
Media Framework - Nov 18, 2016When attempting to play an mp4 video in the medial player the engine will crash. I've tested another video that didn't cause a crash. It is also in the movies folder in the project file attached. ...
Changing the scale of a single HISM instance greatly affects the LOD selection of all instances
UE - Rendering - Architecture - Sep 22, 2025When using ISMs and HISMs, each instance can have its own transform, which can affect the LOD selection of one or more instances. For HISMs in particular, changing the scale of a single instance gre ...
Level Bounds Calculated Incorrectly when using Particle System Components
Tools - Nov 20, 2016If an Actor blueprint contains a particle system component (PSC), the Level bounds behave differently based on if the particle template is / is not Null. If the template is Null, Level Bounds stret ...
Blueprints converted to static mesh with negative scales for a component will invert the faces
Tools - Dec 19, 2016Negative scaled static mesh components in a blueprint will invert their faces when converted to a static mesh. Note that this does not happen in the following situations: If the BP is scaled negat ...
[CrashReport] UE4Editor_CoreUObject!UObjectBaseUtility::IsA() [uobjectbaseutility.cpp:278]
UE - Audio - Jan 19, 2018No user comments on the issue ...
Renaming function in parent class that is overridden by child causes an ensure
UE - Gameplay - Blueprint - Aug 5, 2016Extremely similar repro to [Link Removed], except in this case the parent function has no parameters or return values. Also encountered a one-off crash while exploring repro methods, but was unabl ...
Reproducible softlock on iOS
UE - Platform - Apple - Jul 18, 2023After performing the repro steps, screen will softlock unless you perform the "slide from 3 to 4, then back to 3" steps. Appears to be an iOS system bug, but see if we can find a workaround. ...
Crash occurs when using Random Node and Branch within Sound Cue
UE - Audio - Aug 22, 2016A crash occurs when playing a Sound Cue with Random node used in conjunction with a Branch node. In the original report the user specifically mentions the crash does not occur if you have not opene ...