Unreal Engine Issues
Unreal Engine Issues
Collision Viewmodes do not affect Instanced Meshes properly
UE - Graphics Features - Apr 9, 2018Collision View modes, such as Player Collision and Visibility Collision, do not work with Instanced Static Meshes. Regression?: No This also occurred in 4.18 ...
Conflict between sequencer transform track and Parent Constraint from the Animation Mode breaks temporary pivot translation on any actor
UE - Anim - Anim in Engine - Jul 15, 2025Note: This affects all versions from at least UE 5.3, including mainline latest. The "Animation" Editor Mode allows creating constraints for level actors. One of these, the "Parent" constraint, con ...
Undoing the pasting of a copied node from the Blueprint Diff tools causes an access violation crash
UE - Gameplay - Blueprint Editor - Aug 24, 2017The editor crashes with an Access Violation if a node that was copied and pasted from the Blueprint Diff tools is removed via an undo. Regression?: No This issue also occurred in 4.16 Branches tes ...
Switching CanEverAffectNavigation on a Dynamic Obstacle Leaves Original Area Behind
UE - AI - Sep 15, 2016When setting Can Ever Affect Navigation to false, moving it, and then setting it back to true, the originally affected area remains, and it also creates a new affected area. This occurs each time y ...
UDestructibleComponent::ApplyDamage doesn't affect root chunk if the mesh doesn't fracture.
UE - Simulation - Physics - Destruction - May 6, 2016ApplyDamage calls through to applyDamage on the apex actor, which takes the impulse and applies it to any fractured chunks. If however not enough damage is done to the component to fracture it, no i ...
Bloom banding when exiting top of screen, doesn't affect other sides
UE - Graphics Features - May 27, 2016As a blooming object (the sun in this repro case) leaves the view via the top-edge of the screen, some noticeable banding occurs. Happens in both PIE and -game. Found on: //UE4/Main CL-2991400 //U ...
Error when packaging C++ projects in 4.16 Binary
UE - Foundation - Core - Feb 23, 2017Packaging a C++ project for Android, iOS, or Windows produces an Error. This issue did not reproduce when testing in a source build from P4. Spoke with ChrisB and he believes this is due to the pac ...
Actors in 4.16 do not enter a resting state when expected
UE - Simulation - Physics - May 17, 2017There is extra random bouncing that can last a couple of seconds that does NOT occur in 4.15.2. Sometimes the cube would look like it settled, then randomly pop and bounce again. This happened on b ...
Soft Contraint's Stiffness and Damping settings don't affect anything
UE - Simulation - Physics - May 19, 2017The settings for "Stiffness" and "Damping" in the Soft Constraint setting for Physics Constraints doesn't seem to have an effect on anything. Regression?: No This also occurred in 4.14 ...
Android movie player doesn't work with ES 3.1
UE - Platform - Mobile - Jul 27, 2017Niether movie playback Startup Movies Play on ES3.1 ...