Unreal Engine Issues

Properties of placed-in-map actor instances may not replicate if their default has been edited

If the default value of a replicated property is edited on an instance of a placed-in-map actor, then on the server is value is changed back to the default, a client who joins in progress after this ...

The IndirectLightingSHSingleCoefficient for translucency on mobile is too bright

[AI] FInstancedStruct is not dupilicated properly if values are different from an Actor's defaults

A licensee reports that the values of an FInstancedStruct do not get properly duplicated if they differ from the default values of the Actor or TArray to which they belong. Possible short-term wo ...

Precomputed Visibility no longer calculated on Landscapes

Placing a Precomputed Visibility Volume around or through a landscape does not seem to calculate precomputed visibility for that landscape. This is a regression from behavior in 4.7.6. Also Tested ...

Lightmaps on Mobile Devices Appear Dirtied and Pixelated

Baked lighting on mobile has dirtied or pixelated lightmaps. When testing this issue I attempted to change various settings within the 'Lightmass' section and the changes made did not have much effe ...

Can no longer bulk edit material properties with the property matrix

In 4.7 you could select multiple material assets in the content browser, right click and choose Asset Actions > Property Matrix to bulk edit material properties, but in 4.8 and 4.9, this feature is ...

Adding an Actor Component that is set to Replicate to an Actor that is also set to Replicate disconnects the Client from the Server

Adding an Actor Component that is set to Replicate to an Actor that is also set to Replicate disconnects the Client from the Server. Note: this does not occur if the Actor Component is already added ...

ZenGarden's game sequence doesn't play on device

Zen Garden loads, then the screen fades in and out as if it's ready to begin play. But when the player taps the screen, the only thing that moves are some lensflares, and the level never transitions ...

Crash occurs when diffing blueprint that has had one of its variables changed to a Soft Object Reference

A crash occurs when diffing a blueprint that contains an array that has changed from an Object Reference to a Soft Object Reference. Note: I figured that this could be related to another bug that I ...

Atmospheric Fog Sun Disc Has Wrong Intensity

This behavior has been observed in 4.18.3, 4.19.2, and Main (CL 4048405). Note that adding  BP_Sky_Sphere to the scene and assigning the Directional Light Actor to it will fix the issue. Per User: ...