Replacing blueprint assets causes editor to crash

UE - Gameplay - Blueprint - Jun 1, 2015

When attempting to replace references of one blueprint with another a number of error message windows pop up ([Link Removed]) and the editor will crash. This is a regression since it was working in ...

While renaming a variable in the Details panel, clicking another variable will rename it instead

UE - Gameplay - Blueprint - Feb 11, 2015

While renaming a variable in the Details panel, clicking another variable will rename it instead. ...

Crash Occurs When Clicking Off of Color Picker in Data Table

Tools - Jun 29, 2016

When using an FLinearColor variable in a data table and editing it using the color picker, clicking anywhere off of the color picker window will cause the editor to crash. Error Message: Assertio ...

[Audio Capture] - Editor crashes when activating an Audio Capture component when there are no active input or output devices avilable

UE - Audio - Aug 12, 2022

If a device has no available input or output devices, activating an Audio Capture component will cause the device to crash. Occurs in Editor and Runtime. Assertion failed: NumTotalFrames > 0 [File:E ...

Decal Fade Out does not cause decal to fade, destroys decal at end of fade time

UE - Graphics Features - Jul 27, 2016

Decal Fade Out does not cause decal to fade as expected. Instead, after the delay and fade time, the actor is destroyed with no noticeable fade during this time period. ...

Set Game Paused returns incorrect value when the game is already paused

UE - Gameplay - Jan 12, 2017

Set Game Paused returns incorrect value when the game is already paused. According to the tooltip on the Return Value (reads: Whether the game was successfully set paused/unpaused) it is expected t ...

Enum to string conversion has different results in PIE vs Cooked builds

UE - Gameplay - Blueprint Runtime - Aug 17, 2021

This is because the metadata is editor only and will be stripped in a cooked build. We should make the behavior of the to string function consistent between PIE and a cooked build. ...

Inconsistent results when creating a Blueprint from a custom User Widget code class

UE - Editor - UI Systems - Jan 19, 2017

Depending on how a Blueprint is created from a custom User Widget code class, the resulting Blueprint may not be a Widget Blueprint as expected. Right-clicking on the code class in the Content Brows ...

When changing the Visibility of a RetainerBox wrapped widget to “Not Hit-Testable(Self&AllChildren)”, the widget incorrectly accepts the hit test

UE - Editor - UI Systems - UMG - Jan 28, 2025

The result of changing the Visibility of a widget placed as a child of RetainerBox is not reflected. Here we have disabled hittest for the Button widget, but hittest is incorrectly accepted. This is ...

Shooter Team Start's "Spawn Team" and "Not For Bots/Players" Options Not Working

Docs - Samples - Feb 25, 2016

When using a Shooter Team Start to set up team spawns in Shooter Game, enabling the Not for Bots, Not for Players, or the Spawn Team options don't seem to have an effect, as both the players and bot ...