Unreal Engine Issues

Letter Boxing Appears In Planar Reflection Capture When "Constrain Aspect Ratio" Is Checked

When constrain aspect ratio is checked on a camera it will add black bars if the destination view has a different aspect ratio from the camera. These black bars will appear in the planar reflections ...

Changes to the Navigation settings aren't saved when edited in the Static Mesh Editor

Changes to the Navigation settings aren't saved when edited in the Static Mesh Editor. The values will reset back to default values when the asset is reopened. ...

Material Slot Names Get Replaced With "None" After Merge Actors Operation

After merging two actors the resulting merged actor's slot names will be replaced with "none". Fixing this is a very tedious process for our licensee since there usually is a large amount of slot ...

Spectator Pawn cannot be added to level by dragging into viewport

Spectator Pawn cannot be added to level by dragging into viewport but can be added by using place actor in the level viewport. Regression: This issue occurs in 4.13.2, 4.14.3, and 4.15.1 of the Bin ...

//UE4/Main: Step 'Compile UE4Game Win64' - ComponentVisualizers Error

[Link Removed]ERROR: UEBuildBinary not set up for module ComponentVisualizers ...

Blueprint transformed in sequence does not update at runtime

Blueprint transformed in sequence does not update at runtime. You can see this when rendering out the first part of op_seq sequence or watching the sequence in PIE. ...

Blueprint function inputs can now be referenced as variables but renaming the inputs does not update the placed variable instances

Invalid array length error launching QAGame onto HTML5

Firefox 32-bit Version 52.0.1 This error also occurs in MainRangeError: invalid array length[Learn More] 0943e4e3-83fc-4463-accc-9fd15fd7df6c:157:9 processPackageData blob:http://localhost:53501 ...

Touches on windows generate 2 mouse events.

The problem is that windows supplies both a touch event and a mouse event for each touch. The engine then handles touches as mouse input so that UI elements can work correctly on touch platforms. ...

Editor crash when adding elements to blueprint Set/Map

Adding multiple element to TMap / TSet variable at once with a for loop causes the editor to lock up / crash (respectively). Regression: No - Map & Set variable types not available prior to 4.15 ...