Reproduction steps:
1. Open the attached “BugRepro” project
2. Open the “Assets/Scenes/SampleScene.unity“ Scene
3. Select the “Tilemap” GameObject in the Hierarchy window
4. Open the Tile Palette window (Window > 2D > Tile Palette)
5. Select the Paintbrush Tool in the Tile Palette window
6. Select multiple tiles from the palette
7. Click and drag on the Tilemap in the Scene view to fill an area
8. Observe the crash

Reproducible with: 6000.4.0f1

Reproducible on: Windows 11
Not reproducible on: No other environment tested

Note: The issue could not be reproduced locally

First few lines of the stack trace:
0x00007FFDE20C35FC (Unity) PolygonCollider2D::CreatePolygonShapes
0x00007FFDE1F9B214 (Unity) TilemapCollider2D::PreparePolygonFromTile
0x00007FFDE1F9BD8A (Unity) TilemapCollider2D::ProcessTileChangeQueue
0x00007FFDE313A77B (Unity) BaseBehaviourManager::CommonUpdate<LateBehaviourManager>
0x00007FFDE3140B58 (Unity) LateBehaviourManager::Update