Unreal Engine Issues

Procedural Mesh generated on BeginPlay does not collide with sweep actors in a packaged game

If a Procedural Mesh is created on BeginPlay (at runtime) instead of in the Construction Script, collision with non-player objects does not register correctly in packaged or launched games. This wor ...

TMap and TSet variables do not display properly when inspecting in VS2015

When inspecting a TMap variable during runtime, the value of the variable is not displayed properly inside VS2015. Screenshots included to show what the TMap variable looks like in VS2013 (ProperTM ...

Editor crash with Japanese ATOK input(candidate list related)

This is probably a continuation from [Link Removed]. [Link Removed] fixed the crash with MS-IME input, but crash/instability can still happen with another Japanese input system, ATOK. ...

Network profiler crash

Running with the -networkprofiler command line argument can crash the server on the first engine tick in FNetworkProfiler::TrackFrameBegin because the file writer archive hasn't been created yet. ...

Set Morph Target not being sent to children of Inherited Mesh

In previous versions of UE4, Set Morph target to call the Inherited Mesh and would result in any children of the Inherited Mesh that shared that morph target name to morph. In UE4.9 this no longer ...

Materials using Texture 2D Arrays fail to compile

REGRESSION: Does not occur in 4.24 Materials using Texture 2D Arrays have the following errors:[SM5] /Engine/Generated/Material.ush(2225,107-114): error X3004: undeclared identifier 'Material' [S ...

Unsuccessful WP conversion when map has scripted sublevels

[Quartz][Device Swap] - Quartz Clock Stops when swapping Audio Output Device

When swapping the audio output device while running PIE or a packaged game on Windows, Quartz clocks stop. Does not repro in Release-4.27, but can be reproed in Release-5.0. ...

Reimporting a static mesh will cause some values to be reset back to defaults

Reimporting a static mesh will cause some Static Mesh Editor values to be reset back to defaults. This was reported as JIRA UE-22205 back in 4.10 and was marked fix in 4.12. However, I wasn't able ...

Renaming native struct with redirect can break user defined structs

From https://udn.unrealengine.com/questions/444690/redirecting-ustruct-used-as-member-of-userdefineds.html In 4.20 it was changed so soft object ptrs pointing to classes work correclty with +ClassR ...