Unreal Engine Issues

World Position Offset causing Cracks in Meshes on certain iOS Devices

When using World Position Offset and pushing verts of a mesh, cracks appear on the surface using WPO when deployed to an certain iOS devices. I used the Mobile Previewer to compare results to how t ...

Linux: async loading code crashes when memory pooling is enabled

The reasons is a bad interaction between FIND_MEMORY_STOMPS code in AsyncLoading.cpp and memory pooling. Async loading will set PrecacheBuffer to read/only and will never reset it back, expecting ...

Crash while unhiding streaming level in multiplayer

When unhiding a streaming level several times on the client there can be a crash. ...

When the Transform of InstancedStaticMesh is updated, the Random Seed value of PerInstanceRandom is updated.

When updating Transform of InstancedStaticMesh by UpdateInstanceTransform, PerInstanceRandom used in Material is updated. With 4.16 does not update the RandomSeed value. ...

Crash when calling a RPC function with a TSet or TMap parameter on a client

Calling a RPC function with a TSet or TMap parameter on a client causes the editor to crash. Regression?: No This also occurs in 4.18 ...

WebBrowser SetVisibility not working on Android & iOS

SetVisibility not working with Web Browser Widget on mobile devices ...

Foliage is visually missing in HTML5

Foliage is visually missing in HTML5. This is a new issue and does not occur in 4.19, I believe that it may be correlated to this issue here.https://jira.it.epicgames.net/browse/UE-59573 ...

Crash after removing decal (using set fade out node) during design time and then hitting play

When calling set fade out on a decal during design time via a custom event that is setup to be called in editor a crash will occur when clicking PIE ...

Sequencer: first rendered frame doesn't use AA

"Sequencer: first rendered frame doesn't use AA/motion blur even with a warmup period." ...

Maya Shotgun turntable generation not compatible with Unreal 4.22