Unreal Engine Issues
Unreal Engine Issues
ExpandEnumAsExecs always uses first Exec if an argument name matches Enum value
UE - Gameplay - Blueprint - Jan 13, 2023Reproduced 3/3 times, issue also occurs in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed NOT a Regression. EnumBugBP uses two enum cases and three argument cases for 6 total permutations:Enum w ...
Breakpoints on nodes in deleted functions are not cleared
UE - Gameplay - Blueprint - Nov 16, 2018Might be a simpler repro than this, but take a look at revision 1 of PreRolledBoxes in FortniteMain to see an asset affected by this. It was duplicated from StoreRoot which had breakpoints in some o ...
Physics Linear Velocity functions from UPrimitiveComponent always return (0,0,0) velocity
UE - Simulation - Physics - Jul 30, 2024In Unreal Engine version 5.4, all Physics Linear Velocity functions inside PrimitiveComponent class are returning always a velocity of (0,0,0), even if the Body Instances are moving. This was workin ...
r.ScreenPercentage.Editor does not function
UE - Graphics Features - Jun 2, 2016Setting r.ScreenPercentage.Editor does not affect the upsampling/downsampling of the viewport in the editor. Regression: YES - the console command correctly adjusted the screen precentage in 4.11.2 ...
Initial Modules are clamped to a 0 to 1 time range
UE - Graphics Features - Sep 18, 2015The Initial Modules appear to be clamped to a zero to 1 time frame since 4.8 was released. Projects that are converted from 4.7.6 will have correctly working particle systems, but adding a new part ...
Blueprint Function Library does not save Struct default values
UE - Gameplay - Blueprint - Jan 25, 2017When a Struct is used as a Local Variable in a Blueprint Function Library, the defaults for its member variables are not saved. If, for example, I enter "3" for an Int member, and "Foo" for a String ...
Editor Periodically Has Performance Drops In Basic Scenes
Tools - Dec 27, 2019The Editor experiences performance drops even in the default basic level when left alone running. I experienced them every ~3 seconds. My graph didn't show the drops very clearly so the fps counter ...
UV Layout Changes on export from Engine to Maya and Max
UE - Editor - Content Pipeline - Import and Export - Jan 19, 2015The UV layout of a Mesh is altered slightly when exported from the engine. It becomes more noticeable on objects as their UV Islands shrink in size. Given a default full 0-1 unwrap it looks like t ...
Enum to Byte conversion returns 2 for the first enum then 4 then 6 and so on rather than 0, 1, 2, etc
UE - Gameplay - Blueprint - Sep 1, 2015Enum to Byte conversion returns 2 for the first enum then 4 then 6 and so on rather than 0, 1, 2, etc. This is a regression; does NOT occur in 4.8.3. Reproduced in 4.9.0 binary and Main (2675088) ...
Color and Opacity animation option does not play for Button component
UE - Editor - UI Systems - Aug 25, 2017Color and Opacity animation option does not play for Button component, this occurs both in the Widget editor and during play. This issue is not a regression Versions Tested: 4.16.3 - CL: 3561208 - ...