Unreal Engine Issues

Crash launch application adding .umap url

The application crashes when adding ".umap" to the launch map at application launch. If not specify ".umap", it will be able to launch application. There appears to be a failure to parse the URL. Th ...

"Invalid resource entry creating uniform buffer" when running Vulkan on Mobile

Android projects in 4.22.1 crash on launch with Vulkan enabled. Did NOT reproduce in 4.23 MAIN at CL 6156332 4.22.1 release CL is the same as a related fix for this ( [Link Removed] )  ...

Crash when using UShaderCodeLibraryToolsCommandlet in 4.25

Actor Enable Collision does not affect ISM

The problem was reported via UE Bug Submission. I was able to repro with their provided test project. ...

Scene Capture Cube not affected by bloom

SplineComponent - setting roll affects tangents

Licensee reports issue with setting roll on a spline component control point. ...

5.4, FRHIMemoryPool leaks memory

FRHIMemoryPool will leak data when it is destroyed. "FRHIMemoryPool::Init()" will create "FRHIMemoryPool::DesiredAllocationPoolSize" new "FRHIPoolAllocationData" objects, stored in "FRHIMemoryPool: ...

Synthetic benchmark is affected by Scalability Settings

Sumo Digital Ltd. has reported that the synthetic benchmark has skewed GPUIndex scores when changing graphics scalability settings (i.e. r.LumenScreenProbeGather.DownsampleFactor). They are currentl ...

Editor crash when Use Dynamic Material Instance is set to "True" on landscape

Setting "Use Dynamic Material Instance" to true in the landscape details will cause the editor to crash. Reproduced in 4.19.0 CL 3944462 and 4.20 Main. This feature is not available in 4.18.3. ...

Particle disappears if it is using PSA_Velocity and setting custom time dilation 0

A licensee reported some of their particles disappear when setting the actor's custom time dilation 0. This seems to happen when a particle is using PSA_Velocity as Screen Alignment. This repros in ...