Some operations on material instances do not transmit over transactions.

UE - Virtual Production - Tools - Multi-user - Sep 5, 2025

[Sketchup] Material texture is not updating while using Direct Link on TM

TM - Datasmith Exporter - Sep 4, 2025

Here is a video that showcase the bug [Link Removed] Here is the Sketchup file [Link Removed] This is an importer bug because as you can see into the attached video, it is working as expected insi ...

Client and server can both get stuck waiting for packet sequence history flush

UE - Networking - Sep 4, 2025

The issue occurs when both instances have a significant difference between their last sent and last ack'd sequence number, as they will begin waiting for the sequence history to be flushed for a pac ...

MRQ - Subgraphs do not evaluate properly in Quick Render

UE - Virtual Production - Tools - MRQ - Sep 4, 2025

Subgraphs do not seem to be evaluating properly with Quick Render. Message from the EPS: "While testing out Quick Render, I've found that subgraph nodes are not being evaluated. Digging into it dee ...

Sequencer is not taking into account the TransformOriginOffset of the level sequence actor.

UE - Anim - Sequencer - Sep 3, 2025

When a level sequence actor has camera's marked for preroll in it and information is gathered for a camera cuts location to send to the streaming manager, it does not take into account the Transform ...

Find in Blueprints: Default values of TMap keys are not returned

UE - Framework - Blueprint Editor - Sep 3, 2025

Context Find-in-Blueprints can be used to search the current, or all, blueprints. If you enter a simple string, it would return nodes, pins, pin default values and default values for BP Variables ( ...

PoseSearch Query is flipped 180 degrees 1 frame after a capsule/actor rotation happens.

UE - Anim - Gameplay - Sep 3, 2025

Using MotionMatching with a PoseSearchSchema with a Trajectory grouping. The query gets rotated to match the capsule/mesh component instead of the offset root/actual location of those bones/trajecto ...

RigVMRegistry : The registry is not locked for writing yet : ensure statement error during cook

UE - Anim - Rigging - Control Rig - Sep 2, 2025

I am seeing an cook failure at the very beginning. It goes away with a retry step via Horde. Please find attached call stack. I am able to consistently reproduce it by wiping all the DDC cache and ...

Precision issues with 16-bit Skin Cache shaders.

UE - Rendering - Architecture - Sep 2, 2025

A licensee reported precision issues with position in the gpu skin cache shaders with 16-bit real types enabled. ...

When ControlRig.EnableAnimNodePerformanceOptimizations is enabled, the default pose briefly appears after the Control Rig is reinitialized

UE - Anim - Rigging - Control Rig - Sep 1, 2025

Since UE5.6, ControlRig.EnableAnimNodePerformanceOptimizations is enabled by default, and this appears to be causing the issue. Specifically, when the control rig’s construction event is processed, ...