Each adding a static mesh not containing any collision data keeps increasing PhysX memory

Simulation - Physics - Apr 19, 2021

If the static mesh has UseSimpleCollisionAsComplex and does not have any SimpleCollision shapes, The physics actor will be destroyed immediately in FInitBodiesHelperBase::CreateShapesAndActors, but ...

An array of structures variable has its values reset when the structure is modified without recompiling the blueprint

Gameplay - Apr 2, 2021

An array of a structure that has been modified without the array's blueprint being complied results in the values of the array element being reset. Compiling each blueprint that has the array of str ...

Intermittent fatal assert in GetArchetypeFromRequiredInfoImpl for an object with RF_NeedLoad

Gameplay - Components - Mar 25, 2021

The archetype instance for the ProceduralMeshComponent's physics data object is not flagged as such, so the event-driven loader does not designate it as a preload dependency, which may be putting us ...

Shader complexity mode reportedly broken on Vulkan

Rendering - RHI - Mar 23, 2021

Shader complexity reported (on AH) broken on Linux since 4.25. No local repro attempted. https://answers.unrealengine.com/questions/1019826/shader-complevity-view-mode-is-completely-broken-s.html ...

Enabling Window Animations causes drop down menus to flicker and be displaced

Tools - Slate - Mar 10, 2021

I tested this with 3 Nvidia Drivers to see if I could find a driver that works properly. I tested the following Game Ready drivers Version 457.30, 461.40 and the latest, 461.72. The flicker occurred ...

Loading instanced static mesh causes memory leak in packaged game

Tools - Foliage - Mar 3, 2021

The leaking variable is UInstancedStaticMeshComponent::InstanceDataBuffers. The memory block is passed to InitPerInstanceRenderData() via InstanceDataBuffers.Release(). But the function doesn't mana ...

DSymUtil Crashing - Out of Memory

Platform - Mobile - Feb 8, 2021

DsymUtil is failing to produce .dSYM files, and it seems that this issue is related to when the .dSYM file's final size is greater than 5GB.  It is failing with the following message. UATHelper: P ...

SetEditorProperty does not propagate changes to loaded children blueprints

Tools - Editor Framework - Feb 8, 2021

Changes on the Blueprint Editor are immediately propagated to the child blueprints. ...

Executing r.setres does not render correctly when Orientation of Display is Portrait on Windows PC

Rendering - RHI - Feb 5, 2021

This issue will display correctly in Portrait if you don't specify a resolution, but using r.setres will display it incorrectly. ...