Unreal Engine Issues

Dynamic (transient) material instance assignment lost if object spawnable

Material Instance Dynamic assigned to Spawnable objects with Editor Utility Widget get reverted when hit the Save button in Sequencer. This appears to come from the Material Instance Dynamic not be ...

Editor will crash if a material uses ImposterCaptureSwitch material function after build lighting

TAttributeContainer::CopyFrom crashes when container contains invalid bone indices for active mesh

Currently there's no validation within the animation attribute container that bone ids are valid.  This means that client/game code can add attributes with invalid bone ids into the container and th ...

Special characters in file names are not escaped on Perforce commands

Files and directories with special characters %, @, * and # are not escaped when sent to the P4 Client API. For example, an '@' character is common in root workspace folders when using concurrent bu ...

Dependent values of CVars for animation budget allocator are not correctly updated when setting from ini

It seems that the FConsoleVariableDelegate used with CVars in AnimationBudgetAllocatorCVars.cpp does not get called when values get set initially from ini (e.g. DefaultEngine.ini) so dependent value ...

Render in Movie Render Queue with High Resolution Tiling Overlap causes dark pixels

From UDN: thanks for your reply. I have attached a very basic scene with a MRQ settings preset. The only thing I have changed in the scene is that I've set the Camera Exposure to manual, as it do ...

AlwaysTickPose is prone to double firing notifies in a dedicated server setup.

See UDN for more info: https://udn.unrealengine.com/s/question/0D5QP00000MfU8l0AF/uanimnotifynotify-is-called-twice-for-the-same-notify-on-server-in-a-multiplayer-game ...

Sync Marker validation check fails on Follower anim sequence with an active Mirror Table when Leader anim sequence is playing backwards

Validation fail ...

Draw Invalidating Bounds debug view mode for Virtual Shadow Maps is gone in 5.4

The CVar "r.Shadow.Virtual.Cache.DrawInvalidatingBounds" referenced in the official 5.4 documentation for virtual shadow maps, no longer shows any bounds as the underlying code seem to be removed in ...

Can't set "r.Shaders.Optimize" to false in UE5.4

The CVar "r.Shaders.Optimize" cannot be set to false from DefaultEngine.ini in the section "[ShaderCompiler]" as its help text describes. Also tested on UE5-Main, CL: 34200103 ...