Unreal Engine Issues

Details panel is cleared when a component with the mobility setting of "Non-Scene Component" is selected and the compile button is pressed

If the user has a component that is of the mobility setting of "non-Scene Component" selected and this hits the compile button, the details panel will be cleared. The following are example compone ...

ShowOnlyInnerProperties (Meta UPROPERTY tag) doesn't work in some cases

ShowOnlyInnerProperties doesn't work when the struct in question is either in an array or in an outer struct in an array. (There may be other broken cases as well.) Example: USTRUCT() struct Str ...

Clients Joining a session destroy and recreate all actors in the level upon joining

When a new client joins a server all of the actors will be replaced with new copies of themselves. This will cause things like the construction script and event begin play nodes to fire off every ti ...

The first widget in a widget blueprints hierarchy does not have a parent

The widgets that are the children of the "Root" of the hierarchy of a widget blueprint return null as their parents. The expected parent would be the widget itself. ...

Simulate Physics with Destructible that is using World Support can't be enabled after it's been hit.

When using a Destructible with World Support set simulate physics can be enabled so long as the DM has not been hit yet. Once it's been hit it no long is able to be set to simulate. ...

UMG Throbber is not showing in project when using 'Set Number of Pieces' node off of Event tick

If you add a throbber to a UMG Blueprint and use the Graph of the Blueprint to change the 'Set Number of Pieces' and use 'Event Tick' to tick the widget, the throbber widget will not appear on scree ...

The Error message "Failed to add Class "YourClassName". Failed to automatically hot reload the "YourProjectName" module." appears when adding a class to a C++ project

Edit MattK: This is UserWidget specific. If we don't want users to extend this class we should figure out a way to prevent that in our wizards When trying to add a C++ class to a project the follo ...

Any Alpha value set in a FLinearColor used to draw a line on a Canvas HUD is ignored when the line is drawn

If an Alpha value is set in a FLinearColor that is used to draw a line on a Canvas HUD, the Alpha value is ignored when the line is drawn. A comment in BatchedElements.cpp indicates that some legac ...

DOF sky distance doesn't work correctly

Rolling ball physics bounces on flat landscape with low fps

It's been reported that using the rolling ball physics on a flat landscape will cause the rolling ball to bounce when it crosses a seam. It does not happen on every single seam, but it happens prett ...