# \[UE5.8\] Changing Light Color on a Blueprint subclass of a LightActor crashes the Editor **URL:** \ **Category:** Issues and Bug Reporting (Unreal Engine)\ **Tags:** level-editor, actor-blueprint, unreal-engine, open\ **Created:** [June 24, 2026, 3:36am UTC](https://forums.unrealengine.com/t/ue5-8-changing-light-color-on-a-blueprint-subclass-of-a-lightactor-crashes-the-editor/2730956 "2026-06-24T03:36:37Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Alex-Unclear](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Alex-Unclear](https://forums.unrealengine.com/u/Alex-Unclear)\ **Post date:** [June 24, 2026, 3:36am UTC](https://forums.unrealengine.com/t/ue5-8-changing-light-color-on-a-blueprint-subclass-of-a-lightactor-crashes-the-editor/2730956/1 "2026-06-24T03:36:37Z")
### Summary The crash dump is a stack overflow, it seems to be caused by an infinite loop in the Editor UI to close the Color Picker window once you have picked a Color. It seems to affect any Native Actor with a Components that has a Linear Color Property that are shown inline to the actors details, which are then Subclassed with a Blueprint. ### What Type of Bug are you experiencing? Editor ### Steps to Reproduce 1. Open a new Project 2. In the Content Browser, use the Add button to start the create new Blueprint Class process. 3. Using the “All Classes” section, search for and pick “SpotLight” (the Actor subclass, not the component). 4. Save the new blueprint. 5. Place a copy of the blueprint actor into a blank level. 6. Select the actor in the level editor. 7. In the details panel, click on the Color Palette for the Light Color property. 8. Change the color using the color wheel, then press OK. ### Expected Result The property updates and the light changes color. ### Observed Result The editor crashes. ### Affects Versions 5.8 ### Platform(s) Windows ### Upload an image ![Screenshot 2026-06-24 132932.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/e/1/0/e107c4951bd2068505b8b7c24fa35c7cf32f0ada.png) ### For crash reports, include your callstack Unhandled Exception: EXCEPTION\_STACK\_OVERFLOW UnrealEditor\_Core!EqualsSameDimensions\<0\>() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\UObject\UnrealNames.cpp:248] UnrealEditor\_Core!FNamePoolShard\<0\>::Find() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\UObject\UnrealNames.cpp:1378] UnrealEditor\_Core!FNamePool::Store() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\UObject\UnrealNames.cpp:1883] UnrealEditor\_Core!FNameHelper::FindOrStoreString() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\UObject\UnrealNames.cpp:3294] UnrealEditor\_Core!FNameHelper::MakeWithInternalNumber() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\UObject\UnrealNames.cpp:3086] UnrealEditor\_Core!FName::FName() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\UObject\UnrealNames.cpp:3440] UnrealEditor\_CoreUObject!FProperty::ImportSingleProperty() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\Property.cpp:1634] UnrealEditor\_CoreUObject!UScriptStruct::ImportText() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\Class.cpp:3465] UnrealEditor\_CoreUObject!FStructProperty::ImportText\_Internal() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\PropertyStruct.cpp:321] UnrealEditor\_PropertyEditor!FPropertyTextUtilities::TextToPropertyHelper() [D:\build++UE5\Sync\Engine\Source\Editor\PropertyEditor\Private\PropertyTextUtilities.cpp:44] UnrealEditor\_PropertyEditor!FPropertyValueImpl::ImportText() [D:\build++UE5\Sync\Engine\Source\Editor\PropertyEditor\Private\PropertyHandleImpl.cpp:579] UnrealEditor\_PropertyEditor!FPropertyValueImpl::ImportText() [D:\build++UE5\Sync\Engine\Source\Editor\PropertyEditor\Private\PropertyHandleImpl.cpp:314] UnrealEditor\_PropertyEditor!FPropertyValueImpl::SetValueAsString() [D:\build++UE5\Sync\Engine\Source\Editor\PropertyEditor\Private\PropertyHandleImpl.cpp:1023] UnrealEditor\_DetailCustomizations!FColorStructCustomization::OnColorPickerWindowClosed() [D:\build++UE5\Sync\Engine\Source\Editor\DetailCustomizations\Private\ColorStructCustomization.cpp:446] ============== REPEATS =================== ### Additional Notes I included a screenshot of my debugger stack inspector towards the bottom as the log of the overflow is too large. ---
**Author:** ![Bug-Reporter](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/bug-reporter/32/997076_2.png) [@Bug-Reporter](https://forums.unrealengine.com/u/Bug-Reporter)\ **Post date:** [August 6, 2026, 7:00pm UTC](https://forums.unrealengine.com/t/ue5-8-changing-light-color-on-a-blueprint-subclass-of-a-lightactor-crashes-the-editor/2730956/4 "2026-08-06T19:00:14Z")
UE-385756 has been ‘Backlogged’. This is an issue that is in a queue to be addressed. ---
**Author:** ![Alex-Unclear](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Alex-Unclear](https://forums.unrealengine.com/u/Alex-Unclear)\ **Post date:** [October 6, 2026, 4:19am UTC](https://forums.unrealengine.com/t/ue5-8-changing-light-color-on-a-blueprint-subclass-of-a-lightactor-crashes-the-editor/2730956/5 "2026-10-06T04:19:07Z")
If anyone searches and finds this bug, I can say that it seems resolved in 5.8.3