Unreal Engine Issues
Unreal Engine Issues
Full screen mode when using a laptop with Optimus ignores the gama setting
UE - Graphics Features - Feb 15, 2016When using full-screen mode on a optimus laptop the gama that is set for the system appears to be ignored and uses the default setting, even if it has been adjusted in Windows display calibration se ...
A Function whose declaration is in a platform specific "If" block cannot be bound to a delegate
UE - Foundation - Core - Jun 3, 2016Functions whose definition is in a platform specific "if" block cannot be bound to a delegate and also causes an assert when beginning to play in PIE for the first time since compiling, but the asse ...
UFunctions using the exec specifier are recognized by UHT when building for Development even if they are in a #if WITH_ENGINE
UE - Foundation - Core - Aug 19, 2015If a user declares a UFunction with the exec specifier, the UHT will add a call to that function so that it can be used as a console command in the editor. This becomes an issue when the declaration ...
Crash after switching materials on a particle system mesh and saving the mesh
UE - Graphics Features - Aug 17, 2016The repro steps are very similar to https://jira.ol.epicgames.net/browse/UE-34241 except that you have to save the static mesh before switching back to the particle editor. ...
GoogleVR fails to package with Gradle
UE - Platform - Mobile - Aug 10, 2017Packaging with GoogleVR (Daydream) fails with Gradle enabled: https://answers.unrealengine.com/questions/678203/417-exporting-daydream-project-with-gradle-results.html ...
Can't save BPs after stopping automation tests
UE - Automation Test - Jan 5, 2018User reported that they are unable to save assets after running tests: https://answers.unrealengine.com/questions/742429/cannot-save-or-change-assets-after-running-a-autom.html ...
SweepComponent fails against non-root bodies of skeletal mesh component in PhysX
UE - Simulation - Physics - Apr 6, 2021UDN - https://udn.unrealengine.com/s/question/0D52L00005H9X5XSAV/sweepcomponent-never-returns-a-valid-hit-against-skeletal-meshes-when-using-physx?fromCase=1 ...
Landscape flatten target value and terrace interval's sliders don't take the landscape scale into account
UE - Graphics Tools - Terrain - Landscape - Mar 13, 2024This problem was originally reported in this UDN : https://udn.unrealengine.com/s/question/0D5QP000007yVue0AE/flatten-brush-limit-with-landscape-scale-z?fromCase=1 ...
UDN Bug: ASTC compression becomes greyscale
UE - Anim - Mutable - Feb 13, 2025Bug reported at https://udn.unrealengine.com/s/question/0D5QP00000tOpXN0A0/using-mutable-plugin-results-in-greyscale-textures-on-android-xr?fromCase=1 ...
Inconsistent Behavior of TFieldPath and nullptr comparison
UE - CoreTech - UObject - Mar 7, 2025Commit 6448c6f (https://github.com/EpicGames/UnrealEngine/commit/6448c6f6d1de1e9fac9614248e06ba06b837814d) introduced inconsistent behavior for TFieldPath and nullptr comparison, depending on constn ...