Unreal Engine Issues

Setting KeepState as default in LevelSequences makes Sequencer blend animations not as expected

Setting "Keep State" for an animation in sequencer makes the sequence behave differently in Sequencer and in Play Mode. The animations appear to be blending together instead of having normal transit ...

Incorrect formatting of #include statements in new code class added to project that is not properly set up for IWYU

Attempting to add a new code class to a project that is not correctly set up for IWYU (such as an older project that may not have been properly modified for IWYU when upgrading) will result in the b ...

Visibility of World Outliner doesn't affect skylight

Visibility of World Outliner doesn't affect skylight. But it affects other kinds of lights like Point Light, Directional Light. I found that USkyLightComponent::CreateRenderState_Concurrent() doesn ...

Get viewport size returns unexpected values when Windows scaling is 125% or higher and High DPI support is enabled

Get viewport size node returns unexpected values when the user has set the windows scaling higher than 100% and has also enable High DPI support. ...

Actor in same location warning not working if the origin of a static mesh is not within the collision primitive

If the origin of the static mesh actor is not included within the static mesh primitives, the duplicate actor in same location warning will not proc when building a level. ...

Editor crashes when attempting to open the Window menu after recompiling a Standalone Editor Window plugin

Generated from CrashReporter Attempting to open the Window menu in the Editor after having used the Modules window to recompile a Standalone Editor Window plugin will result in the Engine crashing. ...

4.21 PIE Issues in High DPI

Using a High DPI monitor with a multiple players PIE window results in the 2nd PIE window not saving its location when moved around. Using a monitor with a smaller DPI scale the 2nd window will save ...

Changing case of characters in certain fields does not save the change

Capitalization of Struct variable names, Blackboard key names, Enumeration names and other various fields cannot be changed without changing other parts of the variable to completely change it. Simp ...

Reversed Animations don't play properly using Skeletal Mesh Pose and animations with Keep State in Sequencer

The bug seems to only reproduce when setting animations in sequencer and only if the animations are set to "Keep state". Setting them to "restore default" makes the reversed animation play correctly ...

ScrollBox can't be scrolled in a 3D widget on mobile device