Unreal Engine Issues

[CrashReport] Assertion failed: TaskDataArray.Num() == Exporter->VolumetricLightmapTaskGuids.Num()

This is a trending crash coming out of the 4.18 Previews. Users have not provided any descriptions of their actions when the crash occurred, but at least two of the affected projects are being creat ...

Ensure undoing adding a component in UCS with Hide Construction Script Components in Details View off

An ensure occurs if the user undoes the adding of an Add Component node in the Construction Script, when Hide Construct Script Components in Details View is disabled (which is on by default). ...

Creating a Blueprint using "Event Tick" and adding a "Breakpoint" constrains the user's mouse cursor to the Blueprint editor window when pressing "Play"

When adding a Breakpoint within the "Blueprint Class Actor" editor using "Event Tick," the mouse cursor becomes constrained within the editor window box immediately after pressing Play. The mouse cu ...

Set All Bodies Below Simulate Physics Only Causes Ragdoll Effect if it is Set to Root Bone

-This functions in 4.16 -Physics will only simulate if the Third Person Character bone name variable is set to root -Physics does not affect any other bone -Make sure to plug in set in collision f ...

Build fails due to potential divide by 0 error

Shipping builds of the Engine fail when using the Visual Studio 2017 compiler due to a potential divide by 0 error. This is because the TotalColumnSize property of SMemoryStats is set to 0 by defaul ...

Mouse Wheel Axis input gives different values in HTML5 packages, varying by browser

The value given by the Mouse Wheel Axis is usually 1.0 or -1.0, depending on the direction. In HTML5 packages, this value varies based off the browser that is used. On Firefox (56.0): 0.025 or -0.0 ...

Error on Attempting to Save Map Containing Actor Sequence Component

colored text+Link to screencast of repro steps: + [Link Removed] -May take some clicking around even between windows -Will not save after this -Does not affect 4.16 ...

Static mesh cube with 3 convex elements jitters when enlarged and settling on a convex static mesh at 30 FPS

After importing morph target: Ensure condition failed: Referencing SkeletalRenderGPUSkin.cpp

Hit handled ensure when dragging the slider in Morph Target PreviewLogOutputDevice: Error: Ensure condition failed: DynamicData->MorphTargetWeights.Num() == LODModel.MorphTargetVertexInfoBuffers.Get ...

Material appears darker when applied to the screen via HUD blueprint as apposed to a widget blueprint

Material appears darker when applied to the screen via HUD blueprint as apposed to a widget blueprint ...