Unreal Engine Issues
Unreal Engine Issues
Detail Panel Favorites cause many settings to be duplicated or shown when they aren't normally
Tools - Dec 20, 2017Enabling the "Enable Details Panel Favorites" experimental setting causes some details that were not previously shown to appear. In version 4.18 and onward, it also causes these new details to have ...
Certain Materials do not render on Destructible Meshes in Standalone and Packaged projects
UE - Content - Engine - Nov 10, 2017Certain Materials do not render on Destructible Meshes in Standalone and Packaged projects. I'm unsure of the exact cause but disabling "Used with Skeletal Mesh" in the materials Details panel, then ...
[CrashReport] Assertion failed: OLEReferenceCount == 0 in UE4Editor_SlateRHIRenderer!FSlateRHIRenderer::DrawWindows_Private()
UE - Editor - UI Systems - Slate - Aug 22, 2017This is a regular and longstanding crash in 4.17 that has occurred since at least 4.14. Users have not provided any descriptions of their actions when the crash occurred. There has been some previo ...
Segment to Segment Navigation links not usable/working
UE - AI - Dec 3, 2015A licensee asked about SegmentLinks not working. These were apparently disabled because they were buggy and are waiting to be fixed, but not currently being worked on. Adding this to JIRA since ther ...
Launcher and Editor context / dropdown menus do not display correctly on upcoming Windows 10 build
UE - Editor - UI Systems - Slate - Oct 3, 2016A few users using the Windows 10 Insider Preview have found that after a certain point in the Prerelease builds, starting at 14915 it seems, the Unreal Editor and Epic Games Launcher context menus h ...
EngineTest crashes on open when opened through Binary - UVGeneration.usf
UE - Graphics Features - Jul 27, 2017Crash occurs when opening EngineTest in Binary Launcher, this occurs on both Windows and Mac. Issue does not occur when opening through P4.Fatal error: [File:D:\Build\++UE4+Release-4.17+Compile\Syn ...
Cast enum to byte could occasionally break cook/resave in level BP
UE - Gameplay - Blueprint Compiler - Aug 27, 2020Workaround:The blueprint macro had a cast from the enum to an int and that was causing the issue, getting rid of the cast and just returning the enum and then changing all the places that were usin ...
Inherited AnimBP properties not always working across editor restarts
OLD - Anim - Jan 21, 2016In 4.11 when making changes to node properties in an animation blueprint they will not always appear to update in child blueprint instances when restarting the editor. In the attached project the l ...
Duplicating / Moving (to another level) an actor with a Hierarchical Instanced Static Mesh component causes a crash
UE - Graphics Features - Nov 14, 2016When you have an actor with a Hierarchical Instanced Static Mesh component that has a Static Mesh set and is populated with at least 1 instance and then duplicate it or move it to another level, it ...
Importing static mesh while a PIE session is running permanently breaks nanite on the asset
UE - Editor - Content Pipeline - Import and Export - Mar 12, 2025Importing a Static Mesh during PIE can cause it to never enable Nanite, even if it reports that Nanite is enabled. To re-enable Nanite on the mesh, the asset needs to be deleted and imported again ...