Unreal Engine Issues
Unreal Engine Issues
Farfield shadow in lumen scene
UE - Graphics Features - Jul 21, 2025Shadows in the Lumen Scene from Lumen's Direct Lighting do not match the world when in the Lumen Far Field. This leads to shadows where there should not be any, and missing shadows where there shou ...
After compile, spawnable actor is stuck in spawned state
UE - Anim - Sequencer - Jun 3, 2016After compile, spawnable actor is stuck in spawned state ...
Mouse offset when switching resolution between windowed mode / fullscreen
UE - Editor - UI Systems - Aug 13, 2015When switching between windowed and fullscreen modes during runtime the mouse position is reported incorrectly. Eg. A button with a hover over effect will play the effect when the mouse is near but ...
collision components added to vehicles do not properly register overlap events
UE - Gameplay - Sep 16, 2015overlap events do not fire when collision components such as sphere or capsule collision components are added to a vehicle blueprint. Overlap events seem to register if the component overlaps with o ...
NavModifierComponent doesn't work well with dynamic owner actors
UE - AI - Mar 12, 2015When a raw NavModifierComponent gets added to a character it cuts a hole in the navmesh (as expected) but doesn't update the location with character's movement. And it should. ...
Differences in Post Process FX between Minimized and Maximized Viewport
UE - Graphics Features - Apr 19, 2016When scaling the viewport window using the Maximize/Minimize viewport option, the post processing effects applied to the screen do not scale properly. This issue seemed trivial at first, as the use ...
Copying a Blueprint with existing component causes hit events to be triggered in original BP also
UE - Gameplay - Blueprint - Jan 5, 2016If you have a Blueprint with a pre-existing component, then add that to a map, and copy it, OnHit events in the COPY will also trigger in the ORIGINAL. According to the licensee, this happens with ...
Slate draws the elements of an array even when the array is collapsed
Tools - Aug 20, 2015The elements of an array that are shown in the details panel (below the world outliner) are drawn even when the array is collapsed. This can cause a performance drop when using an array that has a l ...
Dynamically Created Hierarchical Instanced Static Mesh Component Reset with Wind Directional Source
UE - Gameplay - Components - May 6, 2015A HISMC (Hierarchical Instanced Static Mesh Component) created dynamically through blueprints has its simulation reset by the Wind Directional Source. "The HISMC needs to get spawned from an Actor ...
Actors not marked as Always Relevant do not replicate to Clients that have possessed a vehicle past 15,000 units of the point of possession
UE - Networking - Oct 20, 2015Actors not marked as Always Relevant do not replicate to Clients that have possessed a vehicle past 15,000 units (the sq root of Net Cull Distance Squared) of the point of possession. Note that repl ...