Unreal Engine Issues
Unreal Engine Issues
Lumen generates gradated shading even if the light is a constant color sky light
UE - Graphics Features - Lumen - Jul 22, 2022Lumen generates a gradated shading even if objects are lit by a 360-degree constant sky light.[Link Removed][Link Removed] I looked into this and found that this comes from Spherical Harmonics int ...
Text Render Component not updating when Text is changed in Blueprints
UE - Gameplay - Blueprint - Sep 21, 2015When adding a Text Render COmponent to an Actor Blueprint, updating the text in the Text Field will not update the Rendered Text until the Blueprint is Closed and Reopened. This is a regression fro ...
Saving BP is extremely slow with Japanese UI (culture=ja)
UE - Gameplay - Blueprint Editor - Dec 24, 2015Using Japanese UI(culture=ja), time of saving BP is extremely slow in comparison with English UI(culture=en). In a case of attachment project, TestBP1 and TestBP2 take about 3 minutes using Japanes ...
Using Paint Verticies Single Color Node More Than Once Crashes Dev Build
UE - Graphics Features - Jun 10, 2016[UPDATED INFO] After some testing I discovered that using the "Paint Vertices Single Color node" on event tick is what is causing the issue. Using this node with event begin play will not crash. Th ...
Reimporting a static mesh will cause some values to be reset back to defaults
Tools - Jul 5, 2017Reimporting a static mesh will cause some Static Mesh Editor values to be reset back to defaults. This was reported as JIRA UE-22205 back in 4.10 and was marked fix in 4.12. However, I wasn't able ...
Renaming native struct with redirect can break user defined structs
UE - Gameplay - Blueprint - Jul 18, 2018From https://udn.unrealengine.com/questions/444690/redirecting-ustruct-used-as-member-of-userdefineds.html In 4.20 it was changed so soft object ptrs pointing to classes work correclty with +ClassR ...
Selecting multiple actors with differing DataTableHandles causes data loss
UE - Gameplay - Jan 4, 2021The data table customization (and probably others) tries to aggressively clear out row references that are not valid in the table they point to. This breaks when selecting multiple actors or objects ...
TMap<Bool is disallowed despite bool having a hash
UE - Gameplay - Blueprint - Nov 22, 2022Reproduced 3/3 times. User is unable to create a new TMap with bool key through Blueprints (which is the expected result). Issue is technically a Regression, as the ensure does not occur in //UE5/ ...
Spline Component Spline Generation Panel does not trigger Construction Script
UE - Editor - Workflow Systems - Sep 24, 2024From Licensee Spline generation tool no longer triggers the construction script We recently updated from Unreal 5.3 to 5.4 and our level designers are having an issue with the spline mesh generatio ...
In -game in Editor, if streaming-in a LevelInstance and initialize its world partition, then leaving that cell and make it go outside the streaming grid, to re-enter it again, will trigger a check(!StreamingPolicy) if no GC has happened during that time.
UE - World Creation - Worldbuilding Tools - World Partition - Jan 27, 2025This crash can be fixed by adding a couple of || IsRunningGame() like it is done here: FGenerateStreamingContext Context = FGenerateStreamingContext() .SetLevelPackagesToGenerate((bIsPIE ...