Unreal Engine Issues

1 frame flickering when creating UMG using Textblock, ScaleBox and Overlay

As a report of a similar issue, changing the text to right-aligned causes a similar issue. This issue seems to have been occur by a change in CL7540157. It also seems to be improved by adding the p ...

[Audio Analysis][Ensure] - Sound Submix Spectral Analyzer Delegate Throws Ensure when Analysis Started Before the Delegate is Added

Hit the following Ensure when trying to use the Spectrum Analyser. Also hit this in 4.26 so it doesn't appear to be a regression. Occurs with any of the following Band Settings or when creating you ...

Problem importing broken FBX

An FBX exported from 3DEXCITE DELTAGEN fails to parse correctly in the latest FBX SDK and crashes the UE importer. This FBX is automatically repaired when loaded into Maya (citing "polygons with ov ...

RebuildHLOD UAT script doesn't properly handle the -nop4 command line flag

The script performs P4 commands even if -NoP4 was specified. It should properly handle -NoP4 by checking for  if (CommandUtils.P4Enabled) ...

FXAA artefacts on smaller/distant detail

Image Media Source does not display properly on Mobile

Image Media Source does not display properly on Mobile Regression Unconfirmed, can't check issue in 4.26, because project can't be opened on that version. ...

"Base Pass Shader" stat results are missing or display incorrect information while using Vulkan

Base Pass Shader results are not showing, or showing up incorrectly when looking at the Stats results within the material editor of an Unreal Editor using Vulkan. Regression Tested: //UE4/Release-4 ...

When multiple actors are selected, they have different undo behavior in the details panel

When the text in spinbox has focus, it doesn't get the change notification externally. It may also be worth noting that ctrl z or ctrl y also do not get bubbled up to undo the text box values. It a ...

Valve Index Controller Device Visualization Models are misaligned with their physical counterpart

Content browser folder names are allowed to use parentheses, which are disallowed by object paths

The content browser compares folder names against INVALID_LONGPACKAGE_CHARACTERS, which allows parentheses. However, object paths compare against INVALID_OBJECTPATH_CHARACTERS, which disallow parent ...