Unreal Engine Issues
Unreal Engine Issues
Editor hang calling UMoviePipelineBlueprintLibrary::UpdateJobShotListFromSequence
UE - Anim - Sequencer - MRQ - May 14, 2025Within UMoviePipelineBlueprintLibrary::UpdateJobShotListFromSequence we are experiencing an editor freeze when launching an MRQ render of sequences where a camera is unable to find a valid possessab ...
Behavior tree subtree switch reported as hitching
UE - AI - Apr 4, 2016Setup described in UDN post: parent tree: root - selector - run behavior task subtree: root - sequence - custom BP task with just print string repro: print string message (engine tick) is showing u ...
Open Level node does not open the correct level in Packaged game
UE - Gameplay - Blueprint - May 30, 2017Open Level node does not open the correct level in Packaged game. Instead of loading the level named in the node, the node will just open the current level. This issue can cause problems with Matine ...
Camera Shake can apply a new post process material every tick when post process material has "Is Blendable" disabled
UE - Anim - Sequencer - Mar 26, 2024In the repro project the player camera has a post process material that slightly darkens the frame by subtracting 0.01 from the final color. When a camera animation based on a camera sequence is pla ...
Connecting GetSequenceBinding node to LevelSequence including Spawnable Actor etc. will result in error
UE - Gameplay - Blueprint Editor - Feb 22, 2018[Link Removed] ・Open attached project ・Open NewMap ・Confirm that an error appears on the console ・When creating a Windows (64-Bit) package in this state, the same error occurs ...
Physics actor attached during runtime doesn't have proper collision
UE - Gameplay - Oct 14, 2015Physics actor attached during runtime doesn't have proper collision User Description: It seems that the "Weld Simulated Bodies" option on the AttachToActor function (same with AttachActorToActor) ...
Debugging Motion Matching in 5.1, looping animations don't loop root correctly
UE - Anim - Gameplay - Jan 31, 2023Just trying a few simple animations in 5.1, I have a few short looping cycle animation that go in different directions. I see very bad results and it looks like it's because of how MM is assuming th ...
Fixup of spawnables from 5.4 to 5.5 loses custom track names
UE - Anim - Sequencer - Feb 5, 2025In the process of upgrading from 5.4 to 5.5. One of our systems relies on the internal track names in the sequence to dynamically find an actor to bind the track to. As I was testing the system in ...
Investigate render flush at SkeletalMeshComponent InitLODInfos
UE - Anim - Rigging - Apr 19, 2023From UDN : we are spawning a number of characters at the same time during the game, and seeing a major framerate hitch when we do so. After the characters have been spawned, we use SetSkinnedAssetA ...
BlueprintGetter does not work with or disable AnimGraph Fast Path
OLD - Anim - Jan 23, 2020When used as part of the fast path in an ABP, variable Blueprint Getters are not used. If something with a getter that does not conform to or is supported by fast path, is used then fast path should ...