FindObjectsSortMode is deprecated in Unity 6.5: drop the sort argument

What changed

If you followed Unity 6.0's own advice and replaced FindObjectsOfType with FindObjectsByType(FindObjectsSortMode.None), Unity 6.5 now warns about that too. Every overload with a FindObjectsSortMode parameter is deprecated.

Unity's reason is that InstanceID will be replaced by EntityId, and the previous sort order cannot be maintained. Remove the sort argument. If your code depended on the InstanceID order, sort the array yourself by something your game controls, such as a spawn index.

Before and after

var pickups = FindObjectsByType<Pickup>(FindObjectsSortMode.None);
var all = FindObjectsByType<Pickup>(FindObjectsInactive.Include, FindObjectsSortMode.InstanceID);

var pickups = FindObjectsByType<Pickup>();
var all = FindObjectsByType<Pickup>(FindObjectsInactive.Include);

Questions

In what order does FindObjectsByType return objects now?

In no guaranteed order. If any of your code relied on the old InstanceID order, for example to pick the same spawn point each run, sort the array by something you control, such as a name or an index field.

Is this a compile error?

No. The sort-mode overloads are deprecated, so they still compile with a warning. Removing the argument clears the warning and is the same call on 6.5 and later.

Sources

• Scripting API: Object.FindObjectsByType (6000.5)

Related Unity 6 changes

• FindObjectOfType is obsolete: use FindFirstObjectByType or FindAnyObjectByType Unity 6.0 · Scripting
• FindObjectsOfType is obsolete: use FindObjectsByType Unity 6.0 · Scripting
• ModelImporter APIs removed in Unity 6.5: isFileScaleUsed, optimizeMesh and more Unity 6.5 · Editor

Every Unity 6.x change, by version