Unreal Engine Issues

Visual glitches on Mac OS X using an Intel GPU while playing HW accelerated H264 video

This looks to be a system driver bug, but logging here for transparency and future reference. It took me a long while to figure out that the key issue is a conflict during blit between UE4 and the H ...

While a Custom Event's delegate pin is connected to anything its details are not visible in the Details panel

While a Custom Event's delegate pin is connected to anything its details are not visible in the Details panel. Tested with an empty reroute node as noted below as well as a Set Timer node. Reproduc ...

Sprite sheets cannot be reimported in 4.8 in a project that was converted from an older version

User bug report: Why do you guys remove the Json Importer from UE 4.8? All atlases from TexturePacker can not be imported anymore on our projects. Is there a way to activate it? or maybe is there a ...

Blueprint Doesn't Show Components Added at Runtime

When a custom component is added at runtime, it does not show up in the details panel when you select the blueprint that it has been added to. Found in 4.9.2 binary. Reproduced in 4.10 Preview 3 a ...

Crash in GetScreenRect on OPPO and Vivo devices

Cannot export a Datasmith scene to the Unreal Engine project root folder on MacOS.

This is mac specific. I could do the export normally on Windows with the same Twinmotion CL and UE version (5.5 preview).  It is also a regression specific to 5.5, since I've been able to export a d ...

HLSLCC crashed on parsing UAV related instruction

1.glsl_type with image was not fully inited with HlslName field set, causing the crash 2.seems many types of op are not support by current hlslcc, cause error msg. e.g. RWTexture2D.Load[Image Remo ...

Media Player assets do not play in packaged games or in standalone

Media Players and their associated textures do not render in standalone game or in a packaged project. Found on: //UE4/Release-4.11 CL-2897738 Checked 4.9.2 Binary from launcher, issue occurs ther ...

Settings related to Supported Agents are not saved in the DefaultEngine.ini

All entries in the Project Settings window are suppose to be saved in the DefaultEngine.ini file. This does not occur for settings related to Support Agents such as Can Walk, Can Crouch, etc. Note: ...

Vignette in stereoscopic looks incorrect, entire frame as opposed to each eye

Vignette seems to be being applied to the entire frame instead of each eye in stereoscopic, creating a really strange effect in your peripherals when viewed through a HMD. Can also see this effect i ...