Unreal Engine Issues

OnlineServices-Lobbies: Crash when host migration message is received and the next host has already left the session

A crash occurs at FindChecked in the code below.if (PreparedServiceChanges->OwnerAccountId) { InternalPublicData->OwnerAccountId = *PreparedServiceChanges->OwnerAccountId; if (bDispatchNot ...

Crash when mousing over array parameter in Blueprint function graph while debugging

Mousing over an array input inside a Blueprint function can lead to a crash. For this to occur, the first parameter of the function must be a User Defined Struct.  ...

Crash importing SOLIDWORKS model

Importing through Python fails

Version 4.21:The script result in popping the Alembic Import windows instead of a silent importThe provided options are ignored by the importer.  Version 4.22: Results in the provided callstack wi ...

Crash on Linux and Windows with Vulkan when adding Atmospheric Fog to a Level

Adding an instance of Atmospheric Fog to a Level causes the Editor to crash on both Linux and Windows when using Vulkan. There is a different callstack when SteamVR is enabled on Linux which is also ...

Camera modifier blueprint used in another blueprint crashes editor (Assert failed in edit condition code in details panel)

Changing the default values inside of a camera modifier blueprint when referencing it in another blueprint results in a crash. Tested in 4.21, 4.22, 4.23 and 4.24 ...

Assertion failed: Engine crushes when a geometry collection hits a landscape

This is because THeightField::PhiWithNormal has not been implemented yet. ...

Crash compiling a blueprint after changing a Text variable to String, while the Details panel are visible

Crash occurs when the user changes a Text variable to a String while the Details panel is displaying its properties, and then compiling. Crash does not seem to occur if the Details are not visible. ...

Struct crashes when switching variable types while the default values are being shown

If the user switches between two variable types in a struct while the default values are being shown then the editor will crash ...

Enabling Skeletal Mesh 'Per Poly Collision' crashes the Editor

When a Skeletal Mesh isn't assigned, enabling Per Poly Collision on the Skeletal Mesh Component causes the Editor to crash. This issue was reported and tested in 4.20.1 (CL-4233996). This issue was ...