Unreal Engine Issues
Unreal Engine Issues
Physics Mover: AI movement and collisions can cause sharp increase in velocity
UE - Gameplay - Player Movement - Mover - Aug 19, 2025A pawn using the physics mover and using AI movement can sometimes gain an ton of velocity quickly upon colliding with another physics object. It seems to fix it self and revert back to it's origina ...
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 ...
Project Crashes with Warning: LightPropagationVolume.dll is Missing From Your Computer
UE - Graphics Features - Mar 23, 2016After disabling LightPropagationVolume in Plugins Editor, upon restart editor issues warning message 3 times and crashes, leaving project unable to be opened. REGRESSION: This does not occur in UE ...
Calling functions that have an implicit WorldContextObject parameter in a Blueprint function library will give a compile error about a missing __WorldContext pin
UE - Gameplay - Blueprint - May 21, 2015Calling functions that have an implicit WorldContextObject parameter (line trace, execute console command, etc) in a Blueprint function library will give a compile error about a missing __WorldConte ...
Linear Color Texture causes break point through Material Function into Material Instance
Tools - Jan 29, 2015When changing the Texture in a Material Instance made from a Material with Parameters found in a Material Function, Visual Studio throws a breakpoint. I was able to continue past the breakpoint (3 ...
Can't PIE or Save: Editor gets into odd state when editing parameters.
Tools - Jul 20, 2016I've seen this happen in other areas of the editor as well: Data Table fields (floats) for example. Manually typing in numbers to fields seems less prone to this error; using spinners to drag value ...
Moveable/Stationary Point Lights do not render in Orthographic View
UE - Graphics Features - Aug 25, 2016When using an orthographic camera all point lights set to movable or stationary stop rendering while playing in the editor. This is also broken in standalone game. Note I've attached the project f ...
Jumping after walking off a ledge does not allow for Max number of jumps
UE - Gameplay - Oct 18, 2016If the max number of jumps is 'n', jumping from the ground allows for 'n' jumps, but walking off a ledge and then jumping only allows for 'n-1' jumps. Ex: If Jump Max Count is set to 3 (triple jump ...
Running ShowDebug console command during countdown in VehicleGame disables input
UE - Gameplay - Input - Jan 16, 2017REGRESSION No, occurs in 4.14.3 In VehicleGame, if the user runs a "showdebug" command (such as "showdebug animation" or *showdebug rawinput") while the starting countdown is going on, all input wi ...
OnClick Events for buttons in 3D Widgets not firing in Multiplayer
UE - Editor - UI Systems - Mar 6, 2017OnClick Events for buttons in 3D Widgets not firing in Multiplayer. This issue only affects the button component as other Widget components that used the Left mouse button function as expected Regr ...