Unreal Engine Issues

Disabling internal audio to use external audio system shows "Audio Device Manager Initialization Failed!" warning

In addition, we can find  "Main audio device could not be initialized. Please check the value for AudioDeviceModuleName and AudioMixerModuleName in [Platform]Engine.ini." log message in the engine. ...

Deprecated blueprint variable fixups may fail depending on loading order

There is currently no simple way to do a deprecated variable fixup on native variables that are set by a blueprint class. For a simple variable rename, CoreRedirects can be used and will work proper ...

UE does not prompt a User for Login when Perforce has OIDC (URL) setup

UDN Case #: 01130491 From UDN: Our Perforce is using Company internal OIDC for authentication. This is an example when login/logout from command line, that when attempting to login, internet brows ...

SAnalogSlider moves slowly when step size is large

SAnalogSlider calculates FastestStepTime by multiplying the step size value by a constant, resulting in high numbers for larger step sizes. This gets lerped from 1 and used as the repeat time, resul ...

MoverExamples: characters have 1-frame unnecessary extra input latency

Due to the way input is handled on the MoverExamplesCharacter, including AnimatedMannyPawn, we have a delay in the time between when an input event occurs and when it is ingested by the movement sim ...

When an active Niagara Component is moved and reset+reactivated in the same frame, "Interpolated Spawning" causes "Spawn Burst Instantaneous" to spawn particles in the previous frame's outdated location

Consider a Niagara System with an Emitter in "Global Space" that has "Interpolated Spawning" active and a "Spawn Burst Instantaneous" module with a "Spawn Time" of 0.0 (for example, the built-in Con ...

"Override Function" search box in the Blueprint Editor does not match actual function name (only its display name)

This is a quality-of-life issue for UE users. The issue was also detailed by the UDN user in a video in the linked UDN case. The Blueprint Editor provides an "Override Function" functionality in th ...

Landscape holes are poorly represented in global distance field

Rewind Debugger doesn't work as expected when PIE net mode is set to Listen Server

View Changes: external changes desync state and trigger checks

External changes to source control are causing state desyncs which get expressed in code as multiple operations on the same items in the same UI visit. This check is in place because when only using ...