Unreal Engine Issues
Unreal Engine Issues
DataTable::LoadStructData allocating wrong size
UE - Foundation - Core - Oct 5, 2016Pointed out by a licensee here: UDataTableを読みこんだ際のメモリ破壊について When reading the `UDataTable, in DataTable::LoadStructData()` the contents of the struct are interpreted[Image Removed], but the size of ...
(Undo Crash in BPs) [CrashReport] UE4Editor_Core!rml::internal::Block::findObjectSize()
UE - Gameplay - Blueprint - Jul 25, 2017This is a trending crash in the 4.17 Preview. There was one occurrence of this callstack months ago in 4.15.1, but a number of recent ones in 4.17. User DescriptionsI was pressing cltr+z severl ti ...
UDN : Mutable Trying to Access Invalid UEdGraph Pointer
UE - Runtime - Mutable - Mar 6, 2025Hello, We've started seeing a crash within Mutable when it tries to access the source graph in PIE. This only seems to be a problem when running a dedicated server as a separate process. We integra ...
Normal are different after Merge Actor on scaled objects
OLD - Anim - Feb 8, 2018Normal are different after Merge Actor on scaled objects. If the actors aren't scaled, the issue doesn't seem to occur. A licensee is trying to use the Merge Actor tool to optimize their entire pro ...
Crash upon taking a screenshot on Gear VR
UE - Platform - XR - Jul 13, 2017Using the shot console command or the RequestScreenshot function to take a screenshot in Gear VR causes the app to crash. This was tested on Android-19, ETC-1 configuration, with both Developer Mode ...
HiResScreenshot has incorrect masking when screenshot resolution scale does not match the viewport.
UE - Rendering - RHI - Sep 6, 2021After a bit of investigation, the way to fix this would be to modify MergeMaskIntoAlpha to pass in the actual resolution scale and the requested size, and only mask the overlapping pixels. Currently ...
Crash when travelling during ability activation when URL contains "#"
UE - Framework - Jul 18, 2025This issue is related to [Link Removed] Closed , where the "?listen" option sent on the URL to clients could cause issues wi ...
[CrashReport] FScriptArray::ResizeTo() - UArrayProperty::DestroyValueInternal()
UE - Gameplay - Blueprint - Sep 28, 2017This is a slightly trending crash after the 4.17.2 hotfix, although it has occurred since 4.17.0. Users have not provided any description of their actions when the crash occurred. The callstack is ...
Surface Profile Skin shading has some unexpected stripe rendering issues
UE - Graphics Features - Apr 3, 2018So it looks like the artifact is definitely related to whether sss checkboard is enabled, but I can't reproduce it if enabling checkboard right after open the map, I mean it has to be reproduced aft ...
Incorrect Lumen Scene direct lighting when objects behind masked landscape
UE - Rendering - Features - Lumen - Oct 5, 2025When objects are placed behind or beneath a masked landscape and r.Lumen.HardwareRayTracing.SurfaceCacheAlphaMasking is enabled, the direct light evaluation is incorrect. There are two workarounds, ...