Unreal Engine Issues
Unreal Engine Issues
Viewport stuttering during orbit/zoom navigation
UE - Rendering - Graphics Features - Dec 17, 2025Received a report of persistent stutters in the editor when trying to navigate in the viewport, including asset editor viewports like the Skeletal mesh editor and control rig editor. Hardware used ...
OnTextChanged not called for UEditableTextBox / UMultiLineEditableTextBox when text is set programmatically
UE - AI Workflows - UI Systems - Sep 29, 2025When calling SetText() on a UEditableTextBox or UMultiLineEditableTextBox, the OnTextChanged delegate is not triggered. This regression was first reported in UE 5.3 and acknowledged previously in UD ...
The Height of a Jump When Holding the Jump Button is Dependent on Framerate
UE - Gameplay - Player Movement - Nov 20, 2015Setting the Max Jump Hold Time variable to 1 second, and then holding the jump button produces different results depending on the framerate. In this case, the normal jump is at a specific height, bu ...
Copying a destructible mesh in the viewport loses reference to assigned mesh in the details panel
UE - Simulation - Physics - Destruction - Nov 4, 2014BRANCH: MAIN CHANGELIST: 2346079 PLATFORM: Windows DESCRIPTION: When copying a Destructible mesh in the viewport the Destructible Mesh component will not be shown for the copied mesh. The mesh can ...
Modulated Shadows on IOS cause flickering on Skeletal Meshes
UE - Platform - Mobile - Feb 10, 2016Modulated shadows are not functioning properly on IOS devices for skeletal meshes. Any skeletal meshes in the scene will cast a shadow, but have a flickering modulated shadow on the skeletal mesh as ...
FBatchedElements::Draw - OrthoZoomFactor can be reset to 1.0f if Line.bScreenSpace is ever false
UE - Graphics Features - Feb 20, 2017A licensee has reported that the Draw function in BatchedElements.cpp can set the OrthoZoomFactor (not a local variable) to 1.0f if Line.bScreenSpace is ever found to be false. The line this can oc ...
Unable to Save or Close Editor after Copying .FBX to Content Folder via Project Directory
Tools - Jul 5, 2017The editor is not allowing users to save or close a project after an .FBX file has been copied to the project's Content directory and allowing the Content Browser to discover the change in source fi ...
Sound Wave Actions Menu Closes Automatically When Changed to Columns View
Tools - Dec 15, 2017After changing the view to columns (by going through Right click < Create Dialogue < View Options < Columns) the Sound Wave Action menu will close out automatically before any options can be selecte ...
Fog Does Not Behave As Expected in Splitscreen
UE - Graphics Features - May 25, 2018This bug seems to repro very inconsistently for me, but I've seen it affect Atmospheric Fog and Exponential Height Fog, and reproduced in 4.18.3, 4.19.2, and Main CL 4093338. I've attached Config fi ...
Command r.DebugSafeZone.Mode 0 does not disable overlays
Tools - Feb 19, 2020Running the console command r.DebugSafeZone.Mode 0 does not disable all overlays. The issue occurs when setting custom values in DefaultEngine.ini as well. Tested using the following settings: ...