Sprite fails to edit based on UV Source Texture Region, when attempting to bulk edit via Bulk Edit Property Matrix.

UE - Gameplay - Paper2D - Feb 12, 2020

Sprite fails to edit based on UV Source Texture Region, when attempting to bulk edit via Bulk Edit Property Matrix.  User was following along to this Epic tutorial: [Link Removed] However, the e ...

D3D12RHI crash when interacting with UI using dx12 with raytracing enabled

UE - Graphics Features - Feb 12, 2020

Enabling raytracing and DirectX12 results in D3D12RHI crash when interacting with the UI or console inside of the editor.  User is using the latest drivers and has adequate hardware to run raytraci ...

Crash when reimporting staticmesh fail

UE - Editor - Content Pipeline - Import and Export - Feb 12, 2020

When a re import fail, we currently delete the package which in a reimport case produce a crash later. If a reimport fail we should abort and make sure the asset is not touch and exactly like it wa ...

Restore state on animation in level sequence will stop all montages

UE - Anim - Sequencer - Feb 12, 2020

It looks like UnbindFromSkeletalMeshComponent stops all montages. This is called when the animation section restores its state.  https://udn.unrealengine.com/s/question/0D52L00004lun3ySAA/restore ...

Crash when using both tessellation and virtual texture on a landscape material

UE - LD & Modeling - Terrain - Landscape - Feb 11, 2020

When a landscape is set up to use runtime virtual texturing. If it uses a material that writes to a runtime virtual texture and has tessellation enabled. Then we see a crash and the log reports: ...

Atan2() missing from Math Expression node

UE - Gameplay - Blueprint - Feb 11, 2020

Using the math expression Atan2(y,x) inside of a math expression node results in an error.  Tested in:  4.23.1 CL#9631420 ,  4.25 CL#11341939 ...

Placing 'Groom' asset into scene results in assertion failed

UE - Graphics Features - Feb 10, 2020

Dragging a groom asset into the level results in a crash. Link to Project: [Link Removed] Tested in:  4.25 CL#11223911 ...

Custom Profiles Don't Update Maps To Cook When One Is Deleted

Tools - Feb 10, 2020

If you delete a map while it is marked to be cooked in a custom profile, then run the custom profile the map won't be deleted from the profile .ulps. I wasn't able to launch using the new custom pr ...

Compiling a grandchild Blueprint via automated test can lead to crash

UE - Gameplay - Blueprint Compiler - Feb 10, 2020

The crash doesn't happen if the blueprints are loaded ahead of the test by opening them, or if you compile all of them in the same test run. ...

Light shaft smear color due to TAA bleeding

UE - Graphics Features - Feb 10, 2020

See https://udn.unrealengine.com/questions/553031/volumetric-fog-bug.html?childToView=554676#answer-554676 ...