Unreal Engine Issues

Migration from 4.12.5 to 4.13 can result in Blueprint functions losing input/ouput variables

When migrating project from 4.12.5 to 4.13, Blueprint functions can lose input/output variable links. ...

Externally Referenced error is produced after cloning a 4.6.1 project and converting it to a 4.7.6 project

A User in unable to save there project because of they get warnings for all of the objects in their scene saying they are externally referenced. This happens after cloning a project and then convert ...

Get Class Defaults node disconnects output pins when project upgraded from 4.11 to 4.12

Upgrading a project from 4.11 to 4.12 causes Class Default nodes to disconnect their output pins from other nodes. If the node is reconnected and saved, it will disconnect again when the project is ...

Crash importing layered materials from 4.25 to 4.26/4.27

Crash on loading pre-4.20 cloth data when compute skin cache is enabled in 4.21

According to information from the licensee, the else clause was added to "FSkeletalMeshLODModel::(GetClothMappingData()" at CL 4437969 , but if it is the cloth data existing from 4.20 or earlier, it ...

Foliage Instance Static Meshes do not affect the Navmesh

Foliage Instance Static Meshes do not affect the Navmesh. I tried changing the Custom Navigable Geometry to 'Yes' & 'Even if Not Collidable' but got the same results. Repro Rate: 4/4 Tested this i ...

Physics object resting on movable platforms have erratic physics behavior in 4.14

Physics object resting on movable platforms have erratic physics behavior in 4.14. This is a regression from 4.13.2-3172292 User Description: When placing more than 10 or 20 blocks on a moving pl ...

Nav Modifier Volume Not Affecting Nav Mesh Until it is Moved

Nav Modifier volumes are not affected the nav mesh until they are moved from their initial placement position. Found in 4.13.1. Reproduced in 4.12.5 and 4.15 Main CL 3163223 This is similar to [Li ...

Upgrading a project from 4.7 to 4.8 will cause the character to load before the level in a packaged game

After updating a project from 4.7 to 4.8 the character will be loaded first when the project has been packaged out. ...

Crash opening Soul City in 4.19

This does not reproduce in 4.18.2 I spoke with Tim G. from the tools team and we tried a few things. 1stOpened LV_Soul_Slum in 4.18Exported the landscape height mapOpened a level in 4.19 and impor ...