Unreal Engine Issues
Unreal Engine Issues
Redundant Material Slots Added To Mesh With LODs After Upgrading To 4.14 And Higher
Tools - Mar 9, 2017When upgrading a project that was prior to the material slot implementation to a newer engine version will cause redundant material slots to be created. This requires the mesh to have LODs and multi ...
Map Get Node Pins In Niagara Module Scripts Can't Search For Standard Data Types
UE - Niagara - Mar 16, 2020This wasn't like this in 4.24 (see attached images). If you create a variable Engine.Owner.Position the search will find it however. Found in 4.25 Preview 2. Reproduced in 4.26 Main. ...
Static variable declaration causes unresolved external errors when calling FRootMotionMovementParams functions
OLD - Anim - Jan 11, 2017Attempting to call a FRootMotionMovementParams function results in an unresolved externals error on compile because of the static FVector RootMotionScale variable. Workaround: In source, removing s ...
The Rotate Around Point Niagara module does not account for current particle position
UE - Niagara - Oct 16, 2019The rotate around point module no longer adds in particle position, so it does not account for other forces and modules effecting the particles, and will only spin in a circle by default. The user c ...
incorrect virtual texture shader code(in FinalizeVirtualTextureFeedback) on Mobile forward platform
UE - Graphics Features - Mar 15, 2021in the function FinalizeVirtualTextureFeedback, the micro "USE_DBUFFER && MATERIALDECALRESPONSEMASK" returns true on mobile forward, while there is no DBUFFER on Mobile forward obviously. This takes ...
SingleLayerWater is rendering brighter shallow water with fog
UE - Graphics Features - Jul 12, 2021Shallow water areas in scenes with exponential height fog will be brighter than they should be. Possibly due to the fog being applied twice in the SingleLayerWater shading model. ...
UMG property binding fixup for real numbers doesn't always work
UE - Editor - UI Systems - UMG - Apr 5, 2022For UMG delegates, we currently have a fixup pass that ensures that bound functions match the signature of the native delegate. However, the fixup appears to use the wrong function name, which cause ...
Post Process AnimBP is no longer initialized in Persona Viewport
OLD - Anim - Jul 20, 2017Post Process AnimBPs used to be processed in the persona viewport. This could have been intentional. Occurs on? 4.14 - 3249277 - NO 4.15 - 3450819 - YES 4.16 - 3466753 - YES 4.17 - 3545186 - YES ...
Slow response on clicking on InstancedStaticMeshComponent with many elements when using IME
Tools - Aug 7, 2017When clicking on InstancedStaticMeshComponent with many elements, Editor memory usage increases and editor freezes until the operation is finished. The wait and memory usage get much worse when usin ...
Latent Actions do not execute if the blueprint name contains non-english characters
UE - Foundation - Core - Oct 27, 2020REGRESSION: Issue started occurring with 4.25.4 Blueprints with non-English characters in their name will not trigger latent actions. The following warning appears in the log in this case: LogScr ...