Unreal Engine Issues

When PCH is Disabled, Error Occurs in VulkanGenericPlatform.h at Android Build

If disable PCH in Target.cs, an error will occur when building for Android. The log is as follows. LogPlayLevel: Error: D:/Build/Release-4_21_0/Engine/Source/Runtime/VulkanRHI/Private/Android/../Vu ...

Structs cause packaging to fail when Blueprint Nativization Method is set to "Inclusive"

Structs cause packaging to fail when Blueprint Nativization Method is set to "Inclusive" Note: Appears to be a regression (worked in 4.15.1) Error example: UATHelper: Packaging (Windows (64-bit)) ...

Crash on setting Material in Element 1 of Combined Mesh

Crash on clearing or setting the second or third material slot in the Static Mesh Editor on an imported combined FBX Mesh. Also Reproduced in Main Promotable-CL-2484152 (Perforce) NOTE: User is o ...

Walking into some destructibles crashes the editor

Submitted by a licensee on UDN. I verified it and have attached the test level that he provided. In the test map. some boxes fall and break. Walking straight into the boxes causes the editor to cra ...

Crash on adding elements to a TMap property

Adding elements to a TMap<int32, int32> causes the editor to crash if the TMap has a default value associated with it. Tested in 4.22 (CL - 4753647), 4.23 (CL - 7445012), 4.24 (CL - 7605614) ...

Creating a new C++ class derived from the UAbiltyTask from the Gameplay Ability System plugin fails to compile

This is not a regression Tested in //UE5/Release-5.0 CL20979098 Creating a new C++ class derived from the Abilty Task from the Gameplay Ability System plugin fails to compile. From the Live Coding ...

tvOS/IOS: Fails to Build with dSYM Options Enabled Due to DsymExporter Erroring Out

When attempting to package for tvOS or iOS with the generate dSYM options enabled, numerous instances of the following errors occur:[2019.01.21-20.53.35:739][138]UATHelper: Packaging (tvOS): [2019 ...

Crash when deleting mesh instances of a HISM component

When trying to delete an existing (and saved) mesh instance from a Hierarchical Instanced Static Mesh component the Editor crashes due to a failed assertion, however clearing all instances does not ...

Crash when editing category name in the emitter summary

[CRASH]SIGSEGV: invalid attempt to access memory at address 0x0

Callstack: <CALLSTACK START> FTaskThread::ProcessTasksUntilQuit(int) Address = 0x1091943e5 (filename not found) [in UE4Editor-Core.dylib] RenderingThreadMain(FEvent*) Address = 0x10de37e4b (filena ...