Unreal Engine Issues
Unreal Engine Issues
Mouse Position doesn't properly update on tick when framerate is low in standalone game
UE - Editor - UI Systems - Slate - Dec 11, 2015If a game is run in the standalone editor and the FPS drops to ~20-30 FPS, pressing an event such as LMB and returning the mouse position on tick will cause the tick to jump inconsistently. Note: ...
Get World Delta Seconds Not Pausing When Hitting a Breakpoint
UE - Gameplay - Blueprint - Feb 11, 2016When debugging a blueprint using breakpoints, if you click the Resume button while you have Get World Delta Seconds running on tick, it will always return a maximum clamped value of .4 seconds (or l ...
NotBoolean node is broken in specific projects for State Machine Transitions
OLD - Anim - Oct 14, 2015In the attached project, you'll find the NewChar_AnimBP. In the state machine, there is a "NotBoolean" node in the JumpingToFallingLoop transition that appears to be broken. At first, the NotBoo ...
An Actor Reference will reset to a None when referencing a ChildActor
UE - Gameplay - Feb 11, 2016A blueprint with an Actor Reference will reset to a None value on compile or stopping PIE User Description: We have come across a bug with the editor regarding setting direct references to child a ...
Setting Auto Possess AI to "Spawned" or "Placed in World or Spawned" will play falling animation
UE - Gameplay - Player Movement - Sep 3, 2015If the Auto Possess AI is set to Spawned or Placed in World or Spawned then the falling animation will play in the blueprint viewport. ...
Engine Crash When Enabling Distance Field Global Illumination and Opening TM-LightingFeatures
UE - Graphics Features - Jan 11, 2017I was able to open the level once and after a few seconds of being opened the editor crashed while compiling shaders and generating mesh distance fields. Since then I have not been able to open th ...
Character floats off of ramp when walking into a wall that is slightly sloped
UE - Gameplay - Player Movement - Mar 24, 2017Character floats off of ramp when walking into a wall that is slightly sloped. The wall angle is well above the walkable floor angle but the character seems to start walking up the wall regardless. ...
Specular/Anisotropy problems with Nanite Meshes
UE - Rendering Architecture - Jan 11, 2024Specular highlights can disappear with clearcoat materials, when "Clear Coat Enable Second Normal" is enabled ("r.ClearCoatNormal"). ...
Switching project monitor with shift+win+arrow keys
UE - Rendering Architecture - RHI - Apr 24, 2025Using Windows+Shift+Arrow keys to move the application window in Windowed Fullscreen from a low resolution monitor to a high resolution monitor does not resize the application window on a Windows 10 ...
A Client cannot join a Server after setting a GameMode in the OpenLevel node's Options string
UE - Networking - Nov 23, 2015A Client cannot join a Server after setting a GameMode in the OpenLevel node's Options string. Reproduced in 4.9.2 binary, 4.10.0 binary, and Main (CL# 2776829) ...