Unreal Engine Issues

Upgrading from 4.6 to 4.7 can cause the loss of functionality for blueprints

When the user clicks PIE the project functions as intended (the mummy rotates to follow the player). However, when the user plays in Standalone the mummy no longer rotates properly. ...

Object set to simulate via a LevelBp will not be affected by a radial force component

If the objects are set to simulate physics via the details panel it works fine If the objects are set to simulate physics via a level BP the radial force doesn't work Attached video shows you how to ...

LLDB 2-byte char data formatter script fails in Android Studio

Android Studio does not properly parse the UE4DataFormatters_2ByteChars.py distributed in 4.20. ...

Groom/hair "exploding" in multiplayer mode (PIE Listen Server + 2 Players)

Starting 2 editors with remote control plugin enabled will impact performance

Launching a second editor with the websocket server enabled will try to bind to the same address as the first editor, and since the websocket server is running in the game thread, it will block the ...

World Condition FWorldConditionQuerySharedDefinition fails to Link in builds in Unreal Engine 5.7

In FWorldConditionQuerySharedDefinition::PostSerialize, if (Ar.IsLoading() && SerializedObject != nullptr) the SerializedObject is currently only used for debug logging within Link() and is not ...

UMaterialBillboardComponent Memory Leak and Hitching (Unreal 4.19.2 + 4.19.1)

Creating an actor with a UMaterialBillboardComponent causes Editor hitching. ...

Animation Rate Scale does not appear to have an affect when blending an animation with two different Rate Scales

Rate Scale does not appear to have an effect when using a blend space that blends an animation with two separate Rate scales. ...

4K Resolution and High DPI Scaling in Linux aren't completely affected by System Display Scaling

Unreal doesn't change appearance when changing system configuration display scaling options. Editor Texts are still quite small and don't change based on the Display Scaling %. This bug also causes ...

Making a navigation system 'strictly static' affects all subsequently created navigation system instances

The problem is a result of two things: UNavigationSystemV1::bStaticRuntimeNavigation being staticUNavigationSystemModuleConfig::UpdateWithNavSysCDO copying the data from nav sys CDO, including bStat ...