Unreal Engine Issues

EObjectTypeQuery array nodes break when changing Object Channels in Project Settings

When an object channel is deleted in Project Settings, any EObjectTypeQuery array becomes broken due to the array size shifting. Additionally: Enums can change when adding new Object Channels after ...

Editor reads Alt Gr key input as Ctrl + Alt

When changing editor shortcuts / input settings, pressing the AltGr key will cause the editor to read the key combination of Ctrl+Alt rather than a single key press. This is likely due to Ctrl+Alt ...

Small objects have erratic behavior when simulating physics

Small objects have erratic behavior when simulating physics. If drop at an angle, some will start spinning indefinitely on contact with the ground while others will spin in place when hit. This is ...

Copying values of an array created through C++ does not copy all values

Copying values of an array created through C++ does not copy all values, only the first value is copied over. This is different than an array that is created in blueprints when those are copied they ...

Blueprint Diff tool fails to find nodes deleted from an Anim BP and also shows the incorrect State Machine rule

When using the Blueprint Diff tool to diff an Animation Blueprint, it fails to find nodes that have been deleted from a State Machine rule. It also fails to show the correct State Machine rule when ...

Mouse is not captured when running -game on Linux

Launching a game with the -game command causes the game window to not capture the mouse until the window is clicked. Regression: Yes - This behavior does not occur in 4.16.3 (CL 3561208) ...

Crane doesn't work in a packaged game

Unable to select foliage by left clicking after 1.5 k foliage meshes placed

When using the foliage tool, once the mesh count reaches around 1.5k and higher you will be unable to select individual meshes by using the mouse. The lasso tool and the select all tool work as inte ...

PostProcessSettings no longer has the Post Process Materials option

In engine version 4.17 and later the Post Process Materials node is not present. This option allowed for custom Post Process Settings. Other nodes are still present and working as intended. This iss ...

Disabling audio during play causes Editor to hang

The editor hangs when disabling the current audio device that is in use if the editor is currently playing sound ...