Unreal Engine Issues

Blueprint Instanced Variables Data Erased

Instanced variables were given a fix in response to this issue: [Link Removed] Once implemented, when the project is compiled the data from the blueprint instanced variable is removed. A recommend ...

Depth of field rendering artifacts - flickering and masking

Flickering and large flashes can be seen on reflective objects that are out of focus with DOF enabled. DumpGPU shows that artifacts are visible in TSR . ...

Pre-UE5 serialized FVariant FVector data corruption when deserialized in UE5

FVariant is a struct that implements a union of data types, including FVector. When assigning an FVariant an FVector value in engine versions UE 4.27 or earlier, the FVariant will deserialize incorr ...

Applied external forces to vehicles may be nullified by sleeping

If Entering sleeping state and applying external force are same time, the external force is nullified and the vehicle stops immediately. p.Chaos.Solver.SleepEnabled 0 or __ setting SleepLinearVel ...

Double clicking on Interface Function in Blueprint Graph does not take you to the function implementation.

When double-clicking on an interface function call within a blueprint, the expected behaviour is that it will take you to the implementation of this function. However, it currently does nothing. ...

Capturing backtrace of another thread in engine built with clang raises access violation exception

Engine built with Clang throws an exception when calling RtlVirtualUnwind with a different thread ID. Engines built with Microsoft compilers do not occur this problem. For example, if starting PI ...

Shadow map z-fighting when using Overlay material

GetMonitorSizeFromEDID may fail to acquire the native resolution for ultrawide monitors

For some ultrawide monitors, UE may not correctly fetch the native resolution. GetMonitorSizeFromEDID attempts to retrieve native resolution from the Detailed Timing Descriptor of the EDID, but thes ...

Specular lighting occurs that ignores occlusion when lighting a Subsurface material from behind

[Attenuation][Spatialization] - If speaker output is set to stereo, the Surround 2D Non Spatialized Radius Mode doesn't generate any audio

If Surround 2D is set as the Non Spatialized Radius Mode, there is no fallback option if the user's output is not a surround format (eg stereo). There is also nothing communicated in the Tool Tip. ...