Error for having an extra semicolon before a UPROPERTY declaration is not thrown inside of a USTRUCT

UE - Foundation - Core - Oct 26, 2016

Having an extra semicolon on the line before declaring a UPROPERTY will cause UHT to miss parsing the following UPROPERTY. This is expected, but an error is usually given when this is the case. This ...

Frustum culling provides inconsistent results causing particles to render even when the bounds are out of view.

UE - Niagara - Rendering - Nov 5, 2024

When the camera is just outside of the box bounds and it is angled directly away from it , it will start rendering the particles again (as determined by stat GPU differences) despite being out of vi ...

Transform does not update after first time for Instance Static mesh in Blueprint Editor

UE - Gameplay - Blueprint Editor - Mar 2, 2017

In 4.15 When you update the transform of an instance static mesh a second time the editor does not update the location, to get the update to display correctly you must close and re-open the blueprin ...

Peripheral Vision Angles Greater Than 180 Are Being Ignored

UE - AI - May 26, 2016

Values that are larger than 180 for the Pawn Sensing component's Peripheral Vision Angle setting are being ignored. If they are higher than 180, the pawn will act as if it was set to 180. Found in ...

Property editing of FName properties doesn't restrict their length

Tools - Apr 29, 2015

We likely have several places in the editor that convert text taken from an editable text into an FName without ensuring that the string will fit into an FName. This can lead to editor crashes. One ...

Mouse position no longer being tracked after pressing and dragging a button on Android

UE - Platform - Mobile - Feb 3, 2017

Mouse position no longer being tracked after pressing and dragging a button on Android. On PC there is no issue When testing with mouse location via print string on PC mouse position will continue ...

Dithered LOD Transition Has Visual Pop

UE - Graphics Features - Dec 28, 2016

When a static mesh that is placed in the scene begins to transition using dithered LOD, The LOD that is being transitioned away from will "POP" in at full opacity for a moment just before the dither ...

Assertion When Packaging If an Actor in Level Uses Create Canvas 2D Render Target

UE - Graphics Features - Jan 23, 2019

An assertion will occur when packaging if an Actor in level uses "Create Canvas 2D Render Target"  Found in 4.20 CL# 4369336, 4.21 CL 4753647 Blocked for testing in main due to crash when placing ...

Physics object resting on movable platforms have erratic physics behavior in 4.14

UE - Simulation - Physics - Dec 14, 2016

Physics object resting on movable platforms have erratic physics behavior in 4.14. This is a regression from 4.13.2-3172292 User Description: When placing more than 10 or 20 blocks on a moving pl ...

Crash When Adding a Second Vector Parameter to Material Parameter Collection

UE - Graphics Features - Feb 21, 2019

The Editor will crash if you add more than one vector parameter to a Material Parameter Collection.  This works as expected in 4.21 CL# 4753647 Found in 4.22 Preview 2 CL# 5035897 and 4.23 CL# 506 ...