Unreal Engine Issues
Unreal Engine Issues
Crash when spawning actor with no viewport initialized
UE - Editor - Workflow Systems - Nov 22, 2023If an attempt to spawn an actor is made before the Level Editor Viewport is fully initialized (i.e. before it has had a chance to get rendered at least once), and that actor has no specific Factory ...
Bug in CurveLinearColor makes colors of Diffraction material white outside curve range, causing rendering artifacts
UE - Texture - May 14, 2025There seems to be a regression with linear textures (commonly for multi-channel masked textures) in UE5.4. Setting the "Encoding Override" (under Texture > Advanced > Source Color Settings) to "Line ...
Enabling Use Pawn Control Rotation on a SpringArm component does not set the rotation values to zero, and subsequent rotation is not allowed after the setting is disabled
UE - Gameplay - Player Movement - Jan 2, 2016Enabling Use Pawn Control Rotation on a SpringArm component does not set the rotation values to zero. Subsequently disabling Pawn Use Control Rotation make rotation of the component impossible until ...
CRITICAL: Regression: CRASH: SHOOTERGAME: Client crashes when using ServerTravel command
UE - Networking - Sep 17, 2014Update (5/4/15): New repro steps using Main (//depot/UE4/Promotable-CL-2535351): 1. Create a new Blueprint project 2. Create 3 new Levels: MainMenu, Lobby, and Level 3. Create 3 new GameModes: Main ...
Complex Collision as Simple causes odd Overlap behavior
UE - Simulation - Physics - Jan 25, 2016When triggering overlap events with a Static Mesh using Complex Collision as Simple, the overlap Begin and End events will be triggered rapidly in sequence. Changing to Default collision will fix t ...
Sequencer Auto-key will incorrectly place a key for rotation if the object's rotation is not between -180 and 180
UE - Anim - Sequencer - Aug 17, 2016Sequencer prefers rotation to be specified between -180 and 180, while the details panels prefer between 0 and 360. When auto-key is on, sequencer will add a key that does this conversion despite th ...
The 'Console Variables' option does not Output an HTML file
Tools - Aug 23, 2016No HTML file is created when using the newly added 'Console Variables' help menu option. This option is the same as entering 'Help' into the console command window. Neither of these options produce ...
OnSmartLinkReached Event Not Firing in PIE
UE - AI - Sep 20, 2016The OnSmartLinkReached event is not firing in PIE. This is a regression. In 4.12.5 the event fires as expected. Found in 4.13.0 CL 3106830 Reproduced in 4.14 Main CL 3129233. ...
Packaging a plugin from Plugins Editor UI wipes the target folder before packaging
UE - Foundation - Cpp Tools - Plugin System - Sep 23, 2016"Package Plugin" from Plugin Editor UI will wipe the target folder’s contents first then populate it with plugin files. User was expecting “Package Project” like behavior: Create a new folder in th ...
MetalRHI Asserts When Using "Profile GPU" With RHI-Thread/Parallel-Execution
UE - Graphics Features - Sep 14, 2016When the RHI thread is enabled (with or without parallel-execution) for Metal it isn't currently possible to run "profilegpu" because the GPU timestamp emulation code isn't multi-thread safe and pro ...