When painting on a landscape with edit layers, there are UV distortions happening across the boundaries of paint layers when material is using SetMaterialAttributes

UE - Graphics Tools - Terrain - Landscape - Mar 10, 2025

Context Landscape Edit Layers enables users to paint landscapes using non-destructive layers, and can add multiple layers to the landscape that can be edited independently from each other. Problem ...

"Error Provision not found" even though the provision is present and valid in 4.13.1

UE - Platform - Mobile - Oct 31, 2016

A few users are reporting on the Answer Hub and in the Forums that they are getting the following error in their output logs: "Error Provision not found" even though the provision is present and va ...

[CrashReport] Assertion failed: NewWorld | UE4Editor_Engine!UEngine::LoadMap()

UE - Gameplay - Nov 2, 2017

This is a common and longstanding crash that has occurred since at least 4.15. Originally this was being tracked under [Link Removed] due to sharing the same callstack, but that had specific repro ...

Crash when making Android package in SlateTextShaper.cpp

UE - Editor - UI Systems - Slate - Apr 7, 2020

Crash when outputting garbled text when creating Android package. It did not occur in my colleague's environment using English OS, but occurred in my environment using Japanese OS. This issue should ...

Solidworks exporter installation does not proceed

UE - Editor - Content Pipeline - Datasmith - Exporters - Dec 9, 2021

3 users reported the same issue. DEBUG: Error 2203: Database: 1031. Cannot open database file. System error -2147287038  or DEBUG: Error 2203: Database: 1036. Cannot open database file. System err ...

Incremental Cooks: Add dependencies on files loaded during Load/Save of the package

UE - Foundation - Data Pipeline - Cooker - Oct 19, 2022

Iterative and Incremental cooking are supposed to recook packages when their "inputs" change. Most of the time inputs are the package file itself and the other package files on which it has dependen ...

Mesh Space Additive behave differently for non-animated bones and extra bones on a target skeleton

UE - Runtime - Animation - Dec 6, 2023

Typically, non-animated bones behave the same way as extra bones on a target skeleton. However, it appears that this isn't the case for mesh space additive sequences. When a bone is present on th ...

Revision Control > View Changes: Request for changes to Revert File and Unsaved options

UE - Editor - Sep 22, 2025

1. Objects in the Unsaved list cannot be discarded, only saved. The only options to discard changes are restarting UE or manually locating each resource and clicking Reload. This becomes extremely c ...

UPrimitiveComponent mouse events when underneath Slate widgets not correct

UE - Editor - UI Systems - Slate - Jan 7, 2016

Licensee is adding a widget to the viewport overlay via AddViewportWidgetContent(). The widget receives mouse input when hovered. They return unhandled from all their widget's onmouse functions and ...

Switching a code project created in a source-built Engine to use the binary Engine results in files being deleted from the binary Engine installation

Tools - Nov 18, 2016

If a code project is created in an Engine built from source code, and then it is switched to use a binary Engine installed by the Launcher, building the project in Visual Studio will result in numer ...