Search Issue Tracker
Fixed
Fixed in 1.0.0-pre.17
Votes
0
Found in
1.0.0-pre.16
Issue ID
UUM-134679
Regression
No
"Using int based drop handlers is deprecated. Please use EntityId based ones instead" Errors are logged when drag and dropping Assets from the Project Browser to Scene
Steps to reproduce:
- Open the linked Project
- Open any Scene and drag any Asset from the Project Browser into Scene View or the Hierarchy
Actual results: Errors are constantly logged: "Using int based drop handlers is deprecated. Please use EntityId based ones instead.
UnityEngine.GUIUtility:ProcessEvent (UnityEngine.EntityId,intptr,bool&)"
"ArgumentException: Object of type 'System.UInt64' cannot be converted to type 'System.Int32'. System.RuntimeType.CheckValue (System.Object value, System.Reflection.Binder binder, System.Globalization.CultureInfo culture, System.Reflection.BindingFlags invokeAttr)"
Expected results: No Errors are logged
Reproducible with versions: 1.0.0-pre.16
Fixed in: 1.0.0-pre.17
Tested on (OS): Windows 11
Comments (1)
-
makaka-org
Mar 20, 2026 12:42
It was not fixed as it was stated here: https://discussions.unity.com/t/cant-drag-and-drop-anything-in-the-hierarchy-in-unity-6-4/1713586
Add comment
All about bugs
View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.
Latest issues
- Required SpriteMask class (ID 331) is stripped when "Strip Engine Code" is enabled
- “Maximized serialized file backup not found” error is thrown when minimizing a window in a newly opened project
- Build stack trace contains invalid lines when building with IL2CPP using scripts with delegates containing generic types in the signature
- Entities Systems window has a “Show Full Player Loop” dropdown which does nothing when clicked after enabling “Show Full Player Loop”
- Entities Hierarchy Search “Show/Hide” button’s Lens Icon is blurry when the Editor is on an external monitor
Resolution Note:
Fixed in with 1.0.0-pre.17
Resolution Note (fix version 1.0.0-pre.17):
Fixed in with 1.0.0-pre.17