Unreal Engine Issues

Fix the skeletal mesh merge tool material assignment, change the API to avoid confusion

UDN user ask us to change the API for the material to remove confusion with the material ID. Also apparently there is an issue with the skeletal mesh merge tool, the user did not give any repro ste ...

Deleting a large number of unused variables from blueprints forces desktop to windows 7 basic mode until editor is closed

Deleting a large number of unused variables from a blueprint forces the editor into windows 7 basic mode until the editor is closed. ...

Level Bounds Incorrectly Calculated If Particle System Does Not Have "Use Fixed Relative Bounding Box" Enabled

If "Use Relative Fixed Bounding Box" is disabled, level bounds will be incorrectly calculated. This seems to be similar to [Link Removed]. Found in 4.19 CL# 4033788, 4.20 CL# 4212847, 4.21 CL# 4233 ...

Crash converting code project 4.7 to 4.8 ; Array index out of Bounds

Some users are experiencing a crash when converting their project from 4.7 to 4.8. From user reports it appears to be affecting those who have added code to their projects and created blueprints bas ...

Fix up IOS errors calling UI API from non-UI threads

After upgrading to 4.7 from 4.6, one of the Blueprints in this user's project will not save its Replicates setting

One of the Child Blueprints in this user's project will not save its Replicates setting. The Blueprint (apa_room01) is a child of MasterRoom, which has Replicates enabled. When apa_room01 is first o ...

Multiplayer Shootout project sample is crashing on start

The project sample Multiplayer Shootout in the Learn tab is crashing on start up with 4.7.4 Crash does not occur on 4.8. Tested by Patrick.D on Main CL-2498147 Pass in 4.7.5 dev. - CKC 2503383 ...

Packaging a game fails in 4.7 Promoted branch on GitHub because UBT tries to pass 33,000+ characters through the command line.

A user has indicated that he was having some trouble packaging a game in the Promoted branch of 4.7 from GitHub. It appears that UBT was trying to pass 33 thousand characters through the command lin ...

Widget Components set to screen space do not render in the correct position with low engine scalability settings after upgrading to 4.8 from 4.7

I widget component that has been set to show in screen space will not render in the correct position of screen. It will be offset. This appears to happen after a project has been upgraded from 4.7.6 ...

Fix PrimitiveComponent overlap indirection

When doing overlap tests in PrimitiveComponent, UWorld->ComponentOverlapMulti is used. The callstack for that ends up looking like this (callstack is inverted, highest level on top): UWorld::Compo ...