Unreal Engine Issues

Crash when trimming animation and then undoing action

Repro rate: 3/3 times This is a regression as the issue does not occur in 5.1.1  ...

Exception on missing file during GC in horde storage

During GC, if a file was manually deleted (but the storage system is still track), GC can erroneously fail (and never remove the reference). This causes a backup in GC, putting the whole algorithm i ...

FBX: Camera imports to Matinee with skewed position and rotation

Branch Build Label Changelist UE4-Main UE4_[2013-08-27_14.24] 1799942 DESCRIPTION: When importing an animated camera from Maya into Matinee, the placement of the camera is changed (shifted 90 ...

NPC - Instances does not get updates from changes to the parent Niagara Parameter Collection in the editor

When an Niagara Parameter Collection (NPC) is selected as the parent Collection for an NPC Instance (NPCI), all of its current parameters are carried over to the NPCI with their current values as th ...

[CrashReport] Mac crash - libobjc.A.dylib!objc_retain() [UnknownFile]

This is a longstanding but low frequency Mac crash. User DescriptionsChanging camera shake values and testing in a new editor window Callstack from Log[2017.11.09-19.23.22:392][ 63]LogMaterial: Mi ...

Niagara - When Interpolated Spawning is disabled, the first frame of each particle unexpectedly does not take into account the Particle Update stage

Foreword: Even if the behavior described here is by design, it is rarely (if ever) expected or desired. This was discussed and agreed to be treated as a bug. Explanation below. When interpolated sp ...

IOS deviceCrash when input Korean Charactor on EditableTextBox

When ParallelExecutor is enabled, Japanese build output of VisualStudio garbled

From UE4.20, Japanese build output of VisualStudio garbled. Below is a comparison between 4.19 and 4.20. ・4.19.2 1>------ すべてのリビルド開始: プロジェクト:MyProject3, 構成:Development_Editor x64 ------ 1> Clea ...

Attempting to build lighting in project crashes editor

Attempting to build lighting in user's project crashes editor. Frequency: 3/3 CrashReporter: N/A ...

Crash when fast moving Character objects has Teleporting enabled

Reproduced 3/3 times. Issue does not occur in //UE4/Release-4.27, so Confirmed Regression. ...