Unreal Engine Issues
Unreal Engine Issues
Bloated instruction counts in the material editor causing long compiles
UE - Graphics Features - Apr 17, 2019artists are dealing with greatly increased iteration times due to long shader compiles when working in the material editor. This has regressed over time as we add more features to the point were wor ...
Cannot compile project with dedicated server in 4.8
UE - Networking - Jun 23, 2015If a project has built a dedicated server executable then it will fail when trying to convert the project from 4.7.6 to 4.8. EDIT: Following the steps on the wiki page for Dedicated Servers () in 4 ...
Crash undoing variable change in Animation Blueprint.
OLD - Anim - Aug 1, 2016Crash occurs when the user changes a variable in the animation blueprint, and then undo's the change. Note that this occurs with any variable being used, but the callstack will be some what differe ...
Mobile Map loading times have increased from 4.12 to 4.13
UE - Platform - Mobile - Oct 4, 2016The loading time from 4.12 to 4.13 on mobile devices seems to have increased quite a bit. My results: 4.12.5 Windows 7 - Launch On: Loading Level 2 - .51 Loading Level 3 - .74 Loading Level 1 - .73 ...
Pressing Cancel after ColorPicking a Sequencer's tracked Color will not reverted the color to the previous value
UE - Anim - Sequencer - Jun 22, 2025Pressing Cancel after ColorPicking a Sequencer's tracked Color will not reverted the color to the previous value. There's a bug when ColorPicking a color that is being tracked in Sequencer - pressin ...
The CTRL+S shortcut does not save an opened Sequence it the Sequencer Window is undocked
UE - Anim - Sequencer - Jul 29, 2025The CTRL+S shortcut does not save an opened Sequence it the Sequencer Window is undocked. Docking the Sequencer Window to the main window fixes the issue. I've reproduced the behavior on UE versions ...
Copy-pasting an actor property that is a set of strings adds extra quotes and escapes
UE - Editor - Aug 24, 2025Copy-pasting an actor property that is a set of strings adds extra quotes and escapes. The licensee has reported: The problem doesn't happen for example for properties of types set of integers, nor ...
StableSpringsSystem has lots of warnings
UE - Runtime - Deformable - Apr 6, 2026System successfully compiled with 16 warnings. /Engine/Generated/NiagaraEmitterInstance.ush:2732:250: note: variable 'OutMaterialMultiplier' is declared here void SolveDistanceSpringMaterial_Emitter ...
When Sequencer's Add Filter Menu>Keyed(U) is enabled, adding a Key to an actor that previously failed the Filter (had zero Keys) does not immediately include the Keyed actor in the filtered list (if fails FSequencerTrackFilter_Keyed::PassesFilter)
UE - Anim - Sequencer - Jun 25, 2025When Sequencer's Add Filter Menu>Keyed(U) is enabled, adding a Key to an actor that previously failed the Filter (had zero Keys) does not immediately include the Keyed actor in the filtered list (if ...
Crash when compiling Blueprint Function containing a connected Set Variable node for a local variable named after a replicated Actor property
UE - Framework - Blueprint - Nov 5, 2025Creating a local variable inside a Blueprint Function with the same name as a replicated property of AActor (for example, “Role” or “RemoteRole”) and then using a connected Set Variable node for it ...