Unreal Engine Issues

Fix up redirectors can fail if some packages were already checked out

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 ...

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 ...

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

[CrashReport] Mac/Metal crash due to enabling Metal 2.0 on 10.12.6

This is an early trending Mac/Metal crash coming out of 4.18. Mark.S: _Revised Statement: Users are trying to enable Metal 2.0 on 10.12.6. The iOS settings panel lets me show warnings about this st ...

Changing WITH_SUPSTEPPING prevents 4.10 from compiling

In the file EngineDefines.h, changing 37 to read "#define WITH_SUBSTEPPING 0" will cause the solution to fail the build process. ...

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 ...

HTML5 cannot package on Windows 10

HTML5 is not packaging or launching onto browsers in 4.12.5 on Win10 machines. ...

Fixed frame interval playback should be off by default

Favorite level over 10, it becomes impossible to add and delete

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