Unreal Engine Issues

Crash (Assertion failed "SystemInstanceController->IsSolo()") when enabling "Start with Tick Enabled" on a Niagara Component

Currently, Niagara Components are only expected to have their TickComponent() method called when their system is marked as "Solo", which makes them be simulated individually. In the most common scen ...

Cloud Presenter - Presentations with phasing may display all phases at once immediately after launch

Some Presentations containing Phasing will display all phases simultaneously in the Twinmotion Cloud after the Presentation is launched. Issue is consistently reproducible for affected Presentati ...

Nanite pixel programmable visualization view mode does not highlight landscape using landscape visibility mask material set to opaque

World is initialized twice when opened through the Content Browser

When opening a Level from the Content Browser, the world gets initialized twice. This initialization process can be quite long, especially for big world using world partition. There doesn't seem to ...

Fix sampling frame rate not properly setup for dynamic montages

[Interchange] mesh outside LODs hierarchy are added to only lod 0 it should be added to all lods

[Interchange]: Skeletal mesh import do not take geometric transform

We need to support geometric transform for meshes when importing skeletalmesh ...

Crash on PIE shutdown

threads: [Link Removed] [Link Removed] Another occurence: [Link Removed] ...

FASTBuild cannot compile 5.5 for Windows.

A licensee reported errors related to the sarif file when compiling version 5.5 using FASTBuild. The problem is that the FB implementation code doesn't know how to deal with the /experimental cl.exe ...

Mesh Paint mode's Texture Paint has obvious artifact with UV seams

Mesh Painting Texture Paint tool can miss some pixels along UV seams, even with "Enable Seam Painting" set to True. This appears to be because of the difference between rasterization and sampling. ...