Items being drawn twice, one from Selection.Internal, another from RedrawFromNative

I can't quite figure out how to get rid of this issue. My custom inspectors all get items within a foldout drawn twice as seen below.

In the logs, I am seeing double entries with the initiator being different for each call.

The first one being:

Code (CSharp):

1. InspectorWindow.RedrawFromNative() at /home/bokken/buildslave/unity/build/Editor/Mono/Inspector/InspectorWindow.cs:144

and the second:

Code (CSharp):

1. Selection.Internal_CallSelectionChanged() at /home/bokken/buildslave/unity/build/Editor/Mono/Selection.cs:22

I could not find much info on this, some said you can try restoring default layout in the editor, which I tried, but didn't seem to do anything.

I don't seem to have this issue in 2019.x, but as soon as I opened the same thing within 2020+ it starts happening.

Any recommendations?

 

Seeing the same thing, and yes i had no issue from 2019.4, then recently upgraded to 2020.3 and UITK preview14

My issue is not only 1 tho but a few, including these
https://forum.unity.com/threads/reg...a-breaking-change-in-a-recent-update.1036942/
https://forum.unity.com/threads/ins...-causes-failed-to-load-window-layout.1061810/
Which i've fixed/understood and then applied the workaround/gotcha points

The difference with OP is i'm getting the double call even when returning early in my CreateInspectorGUI. So, not limited to dropdown

Edit: not to mention the crash almost whenever i recompile and have the custom inspector inspected

 

I know it *says* it's fixed. I am still having this issue, all the way up to 2022.2b90.

 

still in 2022.3.9 from:

UnityEditor.InspectorWindow:RedrawFromNative () (at /home/bokken/build/output/unity/unity/Editor/Mono/Inspector/InspectorWindow.cs:195)

and

UnityEditor.Selection:Internal_CallSelectionChanged () (at /home/bokken/build/output/unity/unity/Editor/Mono/Selection.cs:37)

Edit: I have found a reliable way to *stop* it for a single selection.

Select my GameObject in the hierarchy.
Hit the lock icon
Deselect the GameObject.
Unlock the lock icon.
Select the GameObject again. -> This time it only selects it once using:

UnityEditor.InspectorWindow:RedrawFromNative () (at /home/bokken/build/output/unity/unity/Editor/Mono/Inspector/InspectorWindow.cs:195)

No Internal_CallSelectionChanged is called, and all of my events and queries work. Otherwise all of my events and queries report good on the initial selection, but when it deselects and selects it again with Internal_CallSelectionChanged, for some reason not all of my VisualElement queries work, thus making my events not work.

Seen below, it is pretty much the same behavior as my original post, but a completely separate project, different code, different PC even, from the original post. Same end result.

The 'listView' line is the result of a VisualElement query. You can see on the 3rd log entry, it finds it, but after Internal_CallSelectionChanged is called, the second time around, the query fails.

 

Obviously not idea, but using EditorApplication.delayCall (as opposed to trying to use a GeometryChanged event) in the event that my list is not found via query, to check again, seems to be able to find it eventually. I really wish I knew why it keeps creating the editor, destroying it and reselecting and creating it again, though (or a better-suited workaround to stop it from deselecting it?)