Unreal Engine Issues

High framerates result in desyncs with clients when using a dedicated server.

When a client operates at a high framerate on a dedicated server, their player movement will become desynced with the server. This manifests in different ways on different versions. In 4.21, it caus ...

Client crashes when executing seamless travel with an active particle system in the level that was spawned at runtime

Clients crash when being part of a Seamless Travel if there was an active particle system in the level that was spawned at runtime. If the travel is not seamless, the particle system is placed in th ...

[CrashReport] UE4Editor-D3D12RHI!FD3D12DescriptorCache::SetConstantBuffers<0>(FD3D12RootSignature const *,FD3D12ConstantBufferCache &,unsigned short const &) [D3D12DescriptorCache.cpp:752]

Generated from CrashReporter ...

ARKit - ARKitCameraMaterial crash

Spawning an object with ARKitCameraMaterial will now crash the app. Tested with 2nd Gen iPad Pro (A1701) Verified in 4.23 MAIN @ CL 5806859 (Needed to install from IPA) ...

Runtime Errors appearing in Sequencer if fixed frame rate is set in projects settings

This ensure happens only when the Start and End of the sequence is set in the "neigborhood" of the keyframe and only if the project framerate is to be Fixed on 60FPS. If you for example play the who ...

Inserting before a FSlateImageRun twice will cause crash

IsPlayInMobilePreview does not return true when using Mobile Preview

A user has reported that the IsPlayInMobilePreview function does not return true when playing in Mobile Preview. From looking at the function, it seems to be looking specifically for the commandline ...

One frame difference with an animation controlled by a sequence when an Anim Class is set to none

If two skeletal meshes are playing an animation at the same time and one of them has an anim class and the other does not, it appears that the animations will be slightly off from one another. ...

Widget Component blurred by motion when attached to camera

Widget component appears to blur while in motion. When compared to other objects in the same frame of reference the widget component is the only one blurring. Regression: Yes This appears to have ...

Scroll bar thickness is unaffected when set below 4

Scroll bar thickness is unaffected when set below 4. There appears to be a minimum size in place that prevents the scroll bar from being set to a size lower than 4 ...