Unreal Engine Issues
Unreal Engine Issues
Performance issue with the material dock
TM - Tools - Oct 1, 2025See video. Tested on 2025.2 In a project where you have a lot of materials, it take a long time to open the material dock. Here around 20 seconds. And that's at each time you want to enter it. Y ...
Float Curve evaluation may yield completely wrong results due to floating-point precision issue
UE - Anim - Runtime - Oct 31, 2024Note: This is possibly related to [Link Removed]. For some inputs, function UE::Curves::WeightedEvalForTwoKeys() inside file "CurveEvaluation.cpp" can incorrectly return the value of the first key, ...
Physics are inconsistent between PIE and Standalone
UE - Simulation - Physics - Apr 16, 2015A user has found that they are seeing differences in how objects are affected by physics in Stand alone as apposed to PIE. While testing the amount of force applied to an object in the different pla ...
EQS Query Not Detecting Different Floors
UE - AI - Jul 7, 2016Running an EQS for something such as finding a random point on a grid will not generate results on multiple floors. See the attached screenshot for an example. Was unable to reproduce in 4.11.2 d ...
Match3 Crashes on IOS and Android when Packaged using Nativized Blueprint Assets
UE - Gameplay - Blueprint Runtime - Aug 19, 2016Match3 crashes shortly after being opened on both Android and IOS devices when the experimental blueprints option "Nativized Blueprint Assets" is enabled. Verified that the issue does not occur if ...
Characters will rarely spawn on top of each other in a networked session
UE - Simulation - Physics - Oct 31, 2016REGRESSION: Maybe (had one occurring of it happening in 4.13.2) When playing with multiple players at the same time in a networked session, it's possible if rare to have characters spawn so they st ...
Dedicated Server crashes when client connects in particular circumstances
UE - Networking - Jun 9, 2016Running a dedicated server with the setup in this fairly simply project causes a crash when a client connects. I'm unaware of the actual cause but getting the reproduction was all I could do. Logs ...
[CrashReport] UE4Editor_Landscape!ULandscapeInfo::UnregisterActor() [landscape.cpp:1856]
UE - LD & Modeling - Terrain - Landscape - Sep 21, 2016This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Assertion failed: LandscapeActor.I ...
Shadows of small movable components popping out
UE - Graphics Features - Jan 19, 2017This must be a regression ...
Adding a code class to a blueprint project causes the editor to crash
UE - Foundation - Core - Oct 5, 2017Adding a code class to a blueprint project causes the editor to crash after attempting to hot reload. This only occurs for a fully bluprint project, code projects or BP projects that have already h ...