Unreal Engine Issues

When setting in PreviewGameLaunguage, the package application always adds "culture" to the argument

Whenever packaging project from Launcher with a PreviewGameLanguage set, the culture="preview language" is added to the UE4CommandLine.txt file. Can avoid this issue by setting "None" in PreviewGam ...

WaitMutex behaves poorly when there are casing differences in the same path

The proposed solution here is to make the casing of the path provided to the hashing function for the mutex consistent with something like:publicstatic string GetUniqueMutexForPath(string Name, stri ...

Adding Components via Editor Utility Widgets does not add component to Details panel

Using the Editor Utility Widget to add components to objects in UE does not appear to function as expected. I reproduced this 8/8 times in UE 5.1, 5.0, and 4.27, confirming that this is not a regres ...

Cloth collisions thickness doesn't scale with the character.

Character's clothes bubble up as their scale goes down due to the collision thickness not being correctly scaled. ...

Display Texture Atlases in Widget Reflector displaying incorrect tooltips

Tooltips within Page 1 of the Texture Atlas Visualizer in Widget Reflector are displaying the incorrect asset. This issue is occurring in Binary //UE5/Release-5.3 at CL 26560699 This issue is occur ...

Rect light artifacts from NaN pixels on surfaces that are coplanar with light position

Rect lights cause artifacts (nan pixels) on pixels of surfaces that are coplanar with light position.  In RectLight.ush, in RectIrradianceLambert, at line 106, c30 is -1, so rsqrt(0) causes a nan to ...

Windows Game Input - DualSense/DualShock controllers DPad button repeat events behave unexpectedly

Some reset to default buttons not appearing for UMG Appearance

Some reset to default buttons not appearing for UMG Appearance. This seems to only affect the Categories like Brush, Style or categories under Style like Normal/Hovered. Individual properties rese ...

'Used with Landscape' missing in Details panel within Usage section of Material Editor

The 'Used with Landscape' option no longer appears/exists within the Material Editor under the Usage section. ...

Crash on UObject::ProcessEvent after 4.7 update

Crash Report [Link Removed] Bugg 38910 After updating project from 4.6.1 to 4.7, user experiences unexplained crash when playing in editor. *In addtion to the crash report, the user provides a lot ...