Unreal Engine Issues

Sphere Trace Distance Field GPU function hides necessary Collision DI input

The collision DI input is a hidden input, but is necessary for compilation. The input node should likely be marked as required, not hidden.  ...

Background blur missing with HDR CompositeMode 1

UPD: According to Affects Version field, issue reproduces in 4.26, Regression for 4.27 - No. ...

Niagara Mesh Renderer causes GPU hang on IOS 13.4.1

[CrashReporter] UnrealEditor-CoreUObject!SavePackageUtilities::WriteToFile(FString const &,unsigned char const *,__int64) [SavePackageUtilities.cpp:544]

Generated from CrashReporter Fatal error: [Link Removed] [Line: 544] Could not write to One possible repro (but is possibly outdated) can be found in [Link Removed].  ...

ToggleDebugCamera Console Command doesn't disable an enabled DebugCamera

The "DisableDebugCamera" node and the "ExecuteConsoleCommand" node with "ToggleDebugCamera" in the Command field do not disable an enabled Debug Camera. Found in 4.22.3 CL#7053642 Reproduced in 4.2 ...

Multi Line Trace by Channel includes Actors with Overlap collision in the Out Hits array

Multi Line Trace by Channel includes Actors with Overlap collision in the Out Hits array (but does not indicate a True Return Value). The two returns match with Ignore and Block collision settings. ...

Using the Set console command to change a value at runtime causes a crash

When using the Set command to change the value of a class at runtime, the game instance will crash with an access violation. Note: This needs to be done in Standalone or a packaged version for this ...

Inherited TMap value of type UObject* is not saved on blueprint compile

When a blueprint inherits a TMap variable with a UObject* as the value, compiling the blueprint causes anything set for the value to rest to "none" Workaround: Adding the TMap through the editor re ...

Child Blueprint construction script runs before parent C++ OnConstruction

When the order of construction is backwards it makes it impossible to have native objects set up components in OnConstruction, that a child BP Construction Script then has access to. Sometimes the C ...

Crash When server traveling from one level and then back again after calling a multiclass event (using Play as Listen Server)

A crash occurs when switching back and forth between levels when using seamless travel. This happens if a multicast was called and if it contains a member variable. ...