Unreal Engine Issues
Unreal Engine Issues
The space between multi line text is gone in game when the text box is placed in a retainer box
UE - Editor - UI Systems - May 4, 2021When using a Text Box with multiple lines inside a Retainer, the lines overlap with each other depending on the letters. It doesn't look this way in the Widget Designer. Additionally, it doesn't loo ...
Copy/paste/duplicate has no effect on Linux
UE - Platform - Linux - Oct 21, 2015Attempting to copy/paste or duplicate a node in blueprint or HUD element in a widget blueprint does not create a copy of the node or element. Edit: This also applies to copying nodes in the materi ...
Editor Crashes when copy/pasting an emitter in the Niagara timeline
UE - Niagara - Feb 8, 2023When creating the emitter's track widget we search for the stack view model's root entry, but the stack view model pointer is null, so we crash. ...
OnKeyDown does not function in packaged game
UE - Editor - UI Systems - Jul 17, 2015Pressing down a key for a widget blueprint works in PIE however, it's not functioning once the project is packaged. Project Rar File: [Link Removed] ...
UUserWidget::bIsFocusable serialization issues
UE - Editor - UI Systems - Mar 29, 2016See repro steps. Workaround Unset and set bIsFocusable on widget's class will allow bIsFocusable to be set and persist on the nested instance. ...
UBackgroundBlur crashes at PSO creation under D3D12 SM6 when stereo rendering is enabled
UE - AI Workflows - UI Systems - Slate - Jun 4, 2026Any Slate widget that triggers the Slate post-process blur (e.g., a UBackgroundBlur with non-zero strength) hits a fatal D3D12 CreateGraphicsPipelineState failure on first render. The fatal is funne ...
zorder of Webbrowser in Mobile device is not same as in the PC
UE - Platform - Mobile - Jul 23, 2018Webbrowser in Mobile devices gets most higher zorder in UMG. This is, as I belive, expected since it is running in native functions. But to meet behaviors in PC, making it to follow given zorder see ...
Color and Opacity animation option does not play for Button component
UE - Editor - UI Systems - Aug 25, 2017Color and Opacity animation option does not play for Button component, this occurs both in the Widget editor and during play. This issue is not a regression Versions Tested: 4.16.3 - CL: 3561208 - ...
Mirror Data Table Asset Not Mirroring Expected Curve Names
UE - Runtime - Animation - Sep 17, 2025When mirroring the MetaHuman Face_Archetype_Skeleton it has been noticed that some curve names are not mirrored correctly (such as head_lod0_mesh_mouth_lowerLipDepress_left) while a large number of ...
Crash occurs clearing Image in UMG_Throbber Appearance Settings
Tools - Sep 30, 2016Editor crashes when you attempt to clear the image in the throbber UMG. Log is attached txt file Tested in 4.13.2 CL 3145013 - This does not happen ...