Unreal Engine Issues
Unreal Engine Issues
Blueprint 'Select' node: nodes connect to all input pins are evaluated while only one input is needed
UE - Gameplay - Blueprint - Aug 15, 2015Originally marked Won't Fix in 2017. Issue reopened on May 1, 2024. All inputs of a Select blueprint node are evaluated, even though in the end only one value is selected. This is wasteful work. ...
GPU Timeout when using a large scale Landscape and Water Body Ocean
UE - Graphics Tools - Terrain - Landscape - Dec 1, 2022Regression: Tested in //UE5/Release-5.0, this issue does not occur so regression is yes. The GPU Timeout only occurs in UE5/Release-5.1, as recreating this issue in previous versions of the editor ...
Niagara Parameters window resets when clicking in a Scratch Module
UE - Niagara - Nov 29, 2022Regression: The UI for the Parameters window in a Niagara System is different from UE5/Release-5.0 to UE5/Release-5.1, so the issue cannot be replicated in Release-5.0 This issue occurs when going ...
Animation Layer Interface content filter overrides other content filters
UE - Editor - Workflow Systems - Jan 30, 2023Animation Layer Interfaces are overriding the filter making it so only that asset type is visible even when paired with other filters. There is an exception to this with the blueprint interfaces fi ...
Second controller input doesn't work setting client mode on PIE.
UE - Editor - UI Systems - Feb 3, 2021When two controllers connected, player2 input is disabled in client mode in PIE. It worked correctly in 4.25, but it has been wrong since 4.26. Digging into FSlateApplication::ProcessKeyDownEve ...
ExposeOnSpawn pins no longer read default values from the linked class
UE - Framework - Blueprint - Dec 18, 2024This is technically a regression that was introduced in 5.5. This was intentionally changed in order to address a separate issue [Link Removed]. Additionally, this makes it explicit that the exposed ...
In Vehicle sims, CenterOfMass override isn't factored into UpdateMassProperties
UE - Simulation - Physics - Mar 24, 2025Origin from this UDN ticket, https://udn.unrealengine.com/s/question/0D5QP00000sGtbO0AS/chaosvehiclemovementcomponent-intertia-tensor-isnt-adjusted-for-center-of-mass-override?fromCase=1 TLDR is th ...
Landscape has a seam when scale is set to a decimal
UE - Graphics Tools - Terrain - Landscape - Jan 13, 2023Regression: Tested in UE5/Release-5.0 at CL 20979098, this issue does occur so it is not a regression. This issue occurs if the scale set for the landscape has a decimal value that is not 0.5. Sett ...
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 ...
The Editor "Show Frame Rate and Memory" does not display the intended output on macOS.
UE - Platform - Apple - Jan 11, 2023Repro Rate: 5/5 This is a live issue that has been tested in the Binary build of //UE5/Release-5.1 at CL 23058290 and DOES NOT OCCUR in Windows and Linux but DOES OCCUR in Mac. This was tested on d ...