UForceFeedbackEffect is only making slight vibration in iOS when value rises from 0 or effect is started.

UE - Platform - Mobile - Jun 11, 2019

UForceFeedback is expected to give vibration just like in the graph of the asset. But only in iOS it is not. It is expected to give continuous vibration following the forcefeedback asset, but only ...

Warnings appear when playing a Sequence while in PIE

UE - Anim - Sequencer - Apr 24, 2017

While executing [Link Removed] Sequencer - Recording - Basics - Template – attempting to view a recorded sequence while in PIE triggers a set of warnings each time the play button was pressed. LogUO ...

SWorldPartitionEditorGrid2D causing editor to crash

UE - World Creation - Worldbuilding Tools - World Partition - Mar 13, 2023

BlueprintNativeEvent in Component Subclass does not show up in BP with the component

UE - Gameplay - Blueprint - Apr 20, 2015

If a function is marked as BlueprintNativeEvent inside of a class that inherits from a component (Scene component, Actor component, etc) then the function cannot be called in a blueprint with the co ...

Custom Events with duplicate input names will not compile

UE - Gameplay - Blueprint - Jan 12, 2015

Custom Events with duplicate input names will not compile. This does not occur immediately: creating two Custom Events with two identically named inputs will not cause a compile error, but if you re ...

bIsComposing assert with Japanese MS-IME input(candidate list related)

UE - Editor - UI Systems - Localization - Apr 18, 2017

When using MS-IME as Japanese input method, scrolling out the text field out side the view causes bIsComposing to be set false - this state causes instability of the editor. Crash happened with Win ...

Packaging a plugin from Plugins Editor UI wipes the target folder before packaging

UE - Foundation - Cpp Tools - Plugin System - Sep 23, 2016

"Package Plugin" from Plugin Editor UI will wipe the target folder’s contents first then populate it with plugin files. User was expecting “Package Project” like behavior: Create a new folder in th ...

Crash when Reimporting SpeedTree asset with Billboard Material reset to the default World Grid Material

UE - Editor - Content Pipeline - Import and Export - Feb 7, 2017

A crash occurs when reimporting a SpeedTree asset after clearing the material billboard element and setting it to the default world grid material. The licensee reporting the issue mentions to worka ...

ReplicatedUsing stops getting called after setting a value to nullptr.

UE - Networking - Oct 20, 2016

Eventually, the ReplicateUsing function called out for a UPROPERTY is no longer being called. After investigation, it appears that the data is making it from the Server to the Client, but that the d ...

Overriding a struct member field's default value on a BP-added component in a BP asset will no longer allow the user to edit that struct member on instances of that BP's component if the member is deprecated.

UE - Framework - Blueprint - Oct 19, 2023

Properties that are deprecated are (incorrectly) not currently being propagated to instances by the duplication logic that we use to instance BP-added components as part of Actor-based BP constructi ...