Unreal Engine Issues

game terminated on android device when connect or disconnect usb dongle

The game crashed when the USB Dongle is connected or disconnected. Games that made by other engines are work fine. Refer to the attached video for the reproduce. ...

Xbox 360 Controller DPad input does not register properly on Android

Using a Xbox 360 controller on an Android device works except that the DPad input is not registered. This same issue does not occur with Xbox One controllers. Regression?: No This occurs in 4.18 ...

Anti-Alias from Draw Line Function does not fully appear on Android

Some of the lines within the launched or packaged version on Android for the draw line function, but not all of them do. This has been checked on iOS and it's working perfectly fine in both 4.8.3 an ...

Translucent objects blink when using Vulkan with Kirin 970 device

Translucent objects ( e,g, effect, fog sheet ) blink when using Vulkan with Kirin 970 device. This issue doesn't occur on Vulan mobile preview, Snapdragon device, and Huawei honor 9(Kirin 960). ...

Crash on Linux and Windows with Vulkan when adding Atmospheric Fog to a Level

Adding an instance of Atmospheric Fog to a Level causes the Editor to crash on both Linux and Windows when using Vulkan. There is a different callstack when SteamVR is enabled on Linux which is also ...

BSP not rendering correctly on Android device Galaxy Note 2

Repro steps: 1. Create a new project with Third Person C++ Template. 2. Build Editor 3. Build Android 4. Cook the default map with ETC1 5. Deploy to the device and launch. No BSP is being rendered a ...

Linux Vulkan editor crashes OOM on older graphics cards

Vulkan editor is very crashy on older cards due to memory pressure. I have to switch to OpenGL to work on the unrelated bugs. I'm attaching the details of the particular failure I had (see VulkanMe ...

Android 9 has api compatibility problem

Packaging for shipping on Android with 'for distribution' checked will cause the build to fail

When you attempt to package a project for shipping with 'For Distribution' enabled, the build will fail for mobile. ...

4.14 Launcher version ships with UE4-VulkanRHI*.a but requires Github source

Launcher build ships with VulkanRHI Android binaries but do not seem to support Vulkan on Android from the launcher build without source. ...