UHT needs to enforce that BlueprintNativeEvents have "virtual" on user-defined _Implementation functions

UE - Foundation - Core - Mar 3, 2015

Forgetting to add the "virtual" in engine code implementations of these _Implementation functions makes them not overridable by users. UHT should catch this and emit a warning/error. For instance t ...

D3D HUNG crash - FD3D11DynamicRHI::RHIReadSurfaceFloatData()

UE - Graphics Features - Jan 18, 2017

This is one of the widespread D3D Hung crashes that have existed since 4.14. This particular callstack has affected around 300 users. The issue has been successfully reproduced on a home PC. Dxdi ...

Text block Outline cropped out at large sizes

UE - Editor - UI Systems - Mar 8, 2017

Text block Outline cropped out at large sizes. This affects Grid Panels and was additionally tested with Horizontal boxes with the same result Regression: This issue does not occur in 4.14.3 Binary ...

Per-section shadow/collision flags lost when merging actors

OLD - Anim - Mar 24, 2017

Information loss when merging actors such as cast shadow and collision. If one of the actors being merged has a different setting such as not casting shadows. This information will be lost and repla ...

Some blueprint nodes are noticeably wider

UE - Gameplay - Blueprint Editor - Feb 19, 2021

Certain blueprint nodes are noticeably wider than they were in 4.25, and seem to get excessively wide if the user fills in literal pins on them. This was noticed with the Array Add nodes, but may a ...

Material Layers "swap" location instead of shift downwards.

UE - Rendering Architecture - Materials - Oct 17, 2023

Licensee request for this as it is affecting productivity. Likely requires a method of allowing a user to choose which behaviour they prefer. For reference, the behaviour changed in CL 11684461 to f ...

Clicking and dragging on a Widget component of an actor that spawns a copy and deletes it's self can cause a crash

UE - Editor - UI Systems - Jun 24, 2015

When a widget component is clicked and dragged upon rapidly and that widget creates a copy of it's self and destroys the previous version it can cause a crash. ...

Crash when clicking on a "Two Bone IK" node

UE - Gameplay - Blueprint - Mar 5, 2015

Crash when clicking on a "Two Bone IK" node in an Animation Blueprint Crash Reporter currently down, see callstack section. Log and dmp are attached ...

Opening blueprints causes editor to crash

UE - Graphics Features - Apr 1, 2015

Opening any files in folders (attached) cause editor to crash. Crash Reporter: [Link Removed] Frequency: 10/10 In user's project (available if needed), opening the project immediately crashes ...

Too large project icon image causes engine to crash

Tools - Apr 27, 2015

The engine will crash if you upload a project icon that's way too large for the 192x192 area. It'll also crash when you open that project back up and try to access the project settings ...