Unreal Engine Issues

Functional Test won't start when placing a moving actor inside the level if setting Navigation Mesh's Runtime Generation to Dynamic

User is trying to use the Functional Test class to construct some automated test cases. Whilst doing this they noticed that adding a BP_Actor (just a static mesh engine cube) that simply rotates (v ...

Shader Compiler Crashes in Remote Build

Output log when crashing UATHelper: Packaging (iOS): LogCook: Display: Max memory allowance for cook 16384mb min free memory 0mb UATHelper: Packaging (iOS): LogCook: Display: Mobile HDR setting 1 ...

[CrashReport] UE4Editor_Foliage!operator<<() [foliageinstancebase.cpp:93]

This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Fatal error: [Link Removed] [Line: ...

[CrashReport] UE4Editor_CoreUObject!UObjectProperty::SerializeItem() [propertyobject.cpp:39]

This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Access violation - code c0000005 ( ...

When using Perforce, saving a level over another leaves the target umap file as "marked for delete"

When working on a level asset and using command "File – Save Current Level As..." to save it over a different level asset, the engine first deletes the target level (that's going to be overwritten) ...

[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 ...

IOS deviceCrash when input Korean Charactor on EditableTextBox

5.5 Static Mesh Import Pipeline Regression

This question was created in reference to: [Link Removed] This post references the first post because this problem was not discovered till now. I think it was masked because the issue appears to be ...

Custom Event with array param does not take a pointer to the array

When an array is passed into a BP custom event, the array's data is passed to the event rather than a pointer to the array itself. This means edits made directly from the event node's input pin (su ...

Linux: Assertion at splash screen when trying to open UE4Editor

I ran into this while looking to verify [Link Removed] at CL 3355923. I logged the issue I was verifying the fix for last night and have not updated anything locally, so the "OpenGL 4.3 not supporte ...