Unreal Engine Issues
Unreal Engine Issues
CommonUI Analog Cursor + Enhanced Input triggers cause Gamepad Face Button Bottom triggers to get stuck when alt-tabbing
UE - Gameplay - Input - Jun 18, 2024Reproduction rate: 5/5 Regression check: No, this also occurs in 5.4.2. Please note that this issue only reproduces with the Gamepad Face Button Bottom and does not occur for any other gamepad butt ...
Crash when searching for a string with the same name as the collection
UE - Editor - Feb 28, 2025The editor crashes when creating a local collection of the same name by typing certain characters in the search box of the content browser. This does not reproduce in UE5.4 and is a regression in UE ...
Niagara Position Mode Unset results in World Space rather than Local Space
UE - Niagara - Apr 16, 2025When an emitter's Position Mode is Unset, the particles spawn in World Space 0,0,0. This is unexpected. If the Position Mode is Unset in 5.4, the particles remain in Local Space, which is the inten ...
Missing materials on the rear lights and windows of library vehicles
TM - Content - Oct 24, 2025Reported in SF [Link Removed] The rear light material and window materials on Twinmotion library vehicles are not present on many vehicles in TM 2025.2. Confirmed affected vehicles are in the foll ...
bStaticWhenNotMoveable in Lighting category instead of Physics
UE - Runtime - Character - Oct 24, 2025"UPrimitiveComponent::bStaticWhenNotMoveable"'s category is set to Lighting, not Physics. This causes it to be hidden when lighting-related properties are hidden, even though it controls physics sta ...
Clicking and dragging on a Widget component of an actor that spawns a copy and deletes it's self can cause a crash
UE - Editor - UI Systems - Jun 24, 2015When a widget component is clicked and dragged upon rapidly and that widget creates a copy of it's self and destroys the previous version it can cause a crash. ...
Can only render Matinee movies with Separate Process
Tools - Aug 23, 2016Can only render Matinee movies with Separate Process. ...
Comment boxes no longer allow pinning/unpinning of comment bubbles
UE - Gameplay - Blueprint - Jun 24, 2015Comment bubbles above comment boxes no longer have an option to pin/unpin comment bubbles. This functionality allowed users to choose whether or not to show the comment bubble, which was useful for ...
Crash-Connecting output of unspecified functions to pins on the material result node
UE - Rendering - Architecture - Materials - Dec 6, 2017Crash-Connecting output of unspecified functions to pins on the material result node. This does occur in Main at CL: 3792526 ...
Ensure when closing PIE during Level Sequence playback with spawnables in a streamed level
UE - Anim - Sequencer - Nov 16, 2020When a spawnable is spawned in a streamed level, exiting PIE will cause an ensure, because the world is not valid on the actor. ...