When copying category properties, all the EditConst flags are not checked. This overrides variables that should not be written.

UE - Editor - Workflow Systems - Mar 12, 2024

If you create two actors that have the same structure of variables in a category, and you try to copy the category variables of one actor into the other, variables that have ReadOnly/EditConst speci ...

Jitter playing animation on actor located far from origin

UE - Anim - Runtime - Mar 12, 2024

A licensee has reported an issue with jitter when playing animations on an actor translated far from the origin (300000.0 units).  This repros on the First Person Template.  The issue is more obviou ...

[AI] Navmesh edge missing for polygon in tile

UE - AI - Navigation - Mar 11, 2024

User is reporting a bug where there are cases that a polygon in a navmesh tile will not generate an edge. This seems to be where only part of the polygon side would be part of the edge, but the rest ...

Playing two instances of the same level sequence with an audio track will not work as expected.

UE - Anim - Sequencer - Mar 11, 2024

Two instances of the same level sequence playing audio will cause the audio to stop playing. ...

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

UE - Audio - Mar 11, 2024

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. ...

CharacterMovementComponent: simulated proxy can go into falling due to linear velocity quantization when using custom gravity

UE - Gameplay - Components - Mar 8, 2024

The character movement component in  void UCharacterMovementComponent::SimulateMovement(float DeltaSeconds) evaluates whether to find the floor when simulating the movement of the simulated proxy ...

Deprecated blueprint variable fixups may fail depending on loading order

UE - Gameplay - Blueprint - Mar 7, 2024

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

UE - Editor - Workflow Systems - Mar 7, 2024

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 ...

Water reflections and GI flicker in 5.4 and 5.3 (fine in 5.2)

UE - Graphics Features - Mar 7, 2024

Since 5.3 customers have been reporting flicker with water surfaces, demonstrating that in 5.2 this flicker is not present. [Link Removed] ...