Unreal Engine Issues
Unreal Engine Issues
NaN is handled differently when clamped on Windows and Android/iOS
UE - Platform - Mobile - Oct 18, 2017NaN (Not a Number) is handled different when clamped on Windows and Android/iOS. If you clamp a NaN (Acheived by -3 ^ 0.2 in the reproduction project) from 0.0 to 1.0 and then print the result, you' ...
Cannot add a new empty group to a Matinee on Mac
Tools - Nov 15, 2017In 4.18, it is no longer possible to add a new empty group to a Matinee on Mac. Instead of asking for a name for the new empty group, the Matinee editor now just displays a small white dot in the Tr ...
(Paper2D) Polygon Collision does not correctly rebuild when using rebuild collision node in packaged game
UE - Gameplay - Paper2D - Nov 29, 2017With tile maps, Polygon Collision does not correctly rebuild when using rebuild collision node in packaged game. This issue does not appear to be a regression. Versions Tested: Issue occurs on all ...
Crash opening Child/Grandchild Blueprint after updating to 4.18
UE - Gameplay - Blueprint - Nov 29, 2017From this UDN: https://answers.unrealengine.com/questions/718928/4180-editor-crash-while-opening-child-blueprint.html Crash occurs when opening child (or in the repro case, grandchild) blueprints a ...
Flat Tessellation broken on DX12 renderer
UE - Graphics Features - Feb 13, 2018Behavior reproduced in 4.17.2 CL 3658906, 4.18.3 CL 3832480 and 4.19.P4 CL 3873914 To run the engine with DX12 I made a shortcut of the UE4Editor.exe found at D:\Epic Games\UE_4.18\Engine\Binaries\ ...
When "Support Material Layers" is Enabled Material Instance Parameter Values Reset to Default Value When Override is Unchecked
UE - Graphics Features - Jul 14, 2018If "Support Material Layers" is enabled, every time you uncheck an overridden parameter box in a material instance the value of that parameter will reset to its parent's default value instead of sta ...
r.SupportPointLightWholeSceneShadows Set to False Causes Crash When Trying to Place a PointLight
UE - Graphics Features - Jul 25, 2018If you disable Support PointLightWholeSceneShadows and try to place a point light in a level the editor will crash. Current work around is put shadows to low from engine scalability settings. Wor ...
Temporal AA and Motion Blur Does Not Work on Manually Animated Bones
OLD - Anim - Jul 30, 2018Manually animated bones of skeletal meshes do not correctly work with temporal AA and motion blur even if "Per Bone Motion Blur" is enabled. Found in 4.20 CL# 4233996 and 4.21 CL# 4234136 Unable t ...
Memory Leak In PageAllocator When Packaged
UE - LD & Modeling - Terrain - Landscape - Aug 29, 2018There is a Memory leak in PageAllocator when packaged. The leak can be stopped if "Landscape.Static" is used in console. Unable to test 4.19 since the provided project was 4.20, but Issue is reporte ...
Blueprint Structure Tooltip Edits Get Discarded
UE - Gameplay - Sep 12, 2018Blueprint Structure tooltip edits get discarded. Current workaround is to make a secondary change that is not needed along with the desired change, Then edit it again to remove the secondary change. ...