Unreal Engine Issues

TSR: tighten the size of the history update's clamping box

Components attached to Camera doesn't receive late updates and "wobble"

Niagara crash when using a particle attribute reader that has been passed around between modules

The following Niagara usage pattern results in either a crash or in incorrect data being read from a Particle Attribute Reader: Emitter Spawn Stage – A module has an Attribute Reader input specifie ...

NavMesh does not update properly when "Can Ever Affect Navigation" is toggled

if I place a mesh with "Can Ever Affect Navigation" set to true, then set it to false, it will leave the NavMesh with a bugged "hole" that AI does not path around correctly (causing the "Blocked" er ...

Slow-rendering thumbnails can be queued up for real-time updates

A licensee is seeing performance drops while using the editor due to a custom thumbnail renderer taking a while to generate thumbnails while Real-Time Thumbnail rendering is enabled, and has request ...

Component Reference of Placed Instance does not Update after Removing the Component in Code.

After creating a component in code and placing an instance of the code class/blueprint into the level, the component will still show as inherited if the component is removed from code. EDIT: Includ ...

Row Fill for Grid panels do not appear to update dynamically for UMG

If the user tries to dynamically set the row fill for a grid panel nothing appears to change ...

CDO is not properly updated on Hot Reload causing "ghost" code.

When a hot reload is preformed, the CDO is not properly cleared. This causes a copy of the class to be generated with both the original and copy triggering calls. Workaround: Preforming an additio ...

Blend space interpolation settings do not update until the user reopens the asset

Changes the user makes to interpolation in the blend space editor do not take effect until the user reopens the asset. ...

Crash opening Child/Grandchild Blueprint after updating to 4.18

From this UDN: https://answers.unrealengine.com/questions/718928/4180-editor-crash-while-opening-child-blueprint.html Crash occurs when opening child (or in the repro case, grandchild) blueprints a ...