Unreal Engine Issues

Crash w. 'Serialized Class LinkerPlaceholderExportObject for a property of BlueprintGeneratedClass'

I was attempting to repro [Link Removed]. I created a new Actor BP, placed it in the level, added a ref to it to the level BP (instead of the projectile approach in the repro), and tried to save my ...

Crash occurs when starting PIE on a level containing a FunctionalTest Blueprint and a sub-level with a landscape component in both levels

Placing a FunctionalTest Blueprint into a level that contains a landscape component and a sub-level that also contains a landscape component results in a crash when PIE is started. This only occurs ...

Pasting nodes into level blueprint crashes editor

An added Static Mesh component with Mobility set to Static disappears at run time if the Actor is moved

This is not a regression tested in //UE5/Release-5.0 CL20979098 An added Static Mesh component with Mobility set to Static disappears at run time if the Actor is moved. ...

DynamicMaterialParameters Niagara module resets write flags on emitter update

When using the DynamicMaterialParameters Niagara module in UE 5.6, 5.7, and UE5-Main (CL 50298778), updating an emitter causes Boolean values, such as Index0Float0Write, to reset to default values, ...

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 ...

Unable to PIE + Crash after editing SColorGradingPicker

Changing Color Grading settings of a post process volume and using "Enter" to commit changes prevents the editor from entering PIE / Simulate mode with the error message "Can't Play In Editor / Simu ...

Packaging fails after changing from Dynamic to Static Nav Mesh Runtime Generation

If you package with Runtime Generation set to Dynamic and then switch to Static and attempt to repackage, the packaging will fail with the following error message.[2016.02.08-16.18.14:511][217]MainF ...

Runtime memory leak with imported FBXs

When a certain kind of mesh is loaded/unloaded at runtime from transitioning levels, the amount of unfreed memory of the game will steadily increase. There is some natural fluctuation of memory but ...

[CrashReport] UE4Editor_Engine!FBlueprintDebugData::FindBreakpointInjectionSites() [blueprintgeneratedclass.h:382]

This is a common and longstanding crash that has occurred since at least 4.9 and affected over 280 users. User DescriptionsI added an item to a BP struct. Last time I did this (several months ago) ...