Selecting multiple actors with differing DataTableHandles causes data loss

UE - Gameplay - Jan 4, 2021

The data table customization (and probably others) tries to aggressively clear out row references that are not valid in the table they point to. This breaks when selecting multiple actors or objects ...

Pressed event triggered after calling FlushPressedKeys while holding the button

UE - Gameplay - Input - Oct 2, 2024

This is an issue related to the behavior of the FlushPressedKeys function when called manually while a button is held. Once the function is called in C++, a Pressed event gets triggered even though ...

In -game in Editor, if streaming-in a LevelInstance and initialize its world partition, then leaving that cell and make it go outside the streaming grid, to re-enter it again, will trigger a check(!StreamingPolicy) if no GC has happened during that time.

UE - World Creation - Worldbuilding Tools - World Partition - Jan 27, 2025

This crash can be fixed by adding a couple of || IsRunningGame() like it is done here:    FGenerateStreamingContext Context = FGenerateStreamingContext()        .SetLevelPackagesToGenerate((bIsPIE ...

Editor crashes when entering something in the console

Tools - Apr 10, 2018

Setting your language to German and using a German keyboard will crash the editor when typing into the console. This is the keyboard that was used for testing: [Link Removed]  ...

"Get Data Table Column as String" Always returns Last Column

UE - Gameplay - Blueprint - Mar 10, 2018

The final column of DataTable is always returned when using "Get Data Table Column as String" blueprint node. "Get Data Table Column as String" Blueprint node is new as of 4.19 ...

Meshes simulating physics cannot roll smoothly across multiple connected meshes

UE - Simulation - Physics - Jul 30, 2018

A user has reported a physics regression from 4.19 to 4.20 where attempting to roll a static mesh down a slope made of multiple meshes no longer results in a smooth roll. The static mesh will skip a ...

Blueprint with large amount of macros crashes on compile

UE - Gameplay - Blueprint Compiler - Jan 30, 2018

Blueprint compile is crashing in a BP with a large number of macros ...

MediaFramework movies not playing properly in Shipping

Media Framework - Nov 7, 2017

`check(Samples.Pop());` this kind of `Pop()` inside of a `check()` is in a few places in MediaSampleQueue.h and MediaSamples.cpp but `check()` expands to nothing in Shipping/Test, so, required work ...

[CrashReport] UE4Editor_Engine!TArray<unsigned int,TAlignedHeapAllocator<0> >::BulkSerialize() [array.h:1173]

OLD - Anim - Mar 19, 2018

Comments from users in crash group:I was loading my project which i have made a copy from previous version of the engine (4.18).4.19 preview crashed while opening my project on 90% ...

Suspension CoM calculations don't update with mass.

UE - Simulation - Physics - Dec 15, 2016

UWheeledVehicleComponent calculates the Suspension settings only when the physics state is first created. When CoM is set through the editor, the vehicle is constructed with the appropriate offset ...