Generating a tilemap and A* grid in unity but they aren't updating correctly

So question is: Why is the unity editor behaving this way (not updating the tilemaps until I go though the scene and click on them) and why is A* not generating the proper grid when Scan() is called from code and only when I use the button in the editor?

So I'm generating a tile map with code and all the generation works... Except when I open up the scene in the editor it looks all messed up, as seen in the First image. The walls are generated but not showing up properly and the A* grid shows everything as walkable. If I go through and click each tilemap node, as can be seen in the next couple shots the tilemaps show up correctly and visually it looks like it should.

I am calling .RefreshAllTiles(); inside my code on each tilemap when I finish their generation. In fact here is the whole function for the TileWalls tilemap node:

private void FloodWallTiles()
{
    _wallTileMap.size = new Vector3Int(_floorTileMap.size.x + 4, _floorTileMap.size.y + 4, 0);
    _wallTileMap.origin = new Vector3Int(_floorTileMap.origin.x - 2, _floorTileMap.origin.y - 2, _floorTileMap.origin.z);
    _wallTileMap.ResizeBounds();

    int xRightBounds = _wallTileMap.origin.x + _wallTileMap.size.x;
    int yTopBounds = _wallTileMap.origin.y + _wallTileMap.size.y;

    for (int i = _wallTileMap.origin.x; i < xRightBounds; i++)
    {
        for (int j = _wallTileMap.origin.y; j < yTopBounds; j++)
        {
            Vector3Int currentCell = new Vector3Int(i, j, _floorTileMap.origin.z);
            if (_floorTileMap.HasTile(currentCell) || _subWallTileMap.HasTile(currentCell))
            {
                continue;
            }
            else
            {
                _wallTileMap.SetTile(currentCell, _wallTiles);
            }
        }
    }
            _wallTileMap.RefreshAllTiles();
}

After doing that, I have to hit scan on my A* node even though I am calling Scan() on my gridGraph in my code, and only doing that AFTER I have generated the tilemaps and moved it into position. See code for that below the final image.

private void SetAStarPathFinderAttributes()
{
    int width = _wallTileMap.size.x;
    int height = _wallTileMap.size.y;
    float nodeSize = 1;

    Vector3 center = GetTileMapCenter();

    AstarPath sceneAstarComponent = _aStarPathfinderPrefab.GetComponent<AstarPath>();
    GridGraph grid = sceneAstarComponent.data.gridGraph;

    grid.center = center;
    grid.SetDimensions(width, height, nodeSize);
    AstarPath.active.data.gridGraph.Scan();
}

private Vector3 GetTileMapCenter()
{
    int halfWidth = _wallTileMap.size.x / 2;
    int halfHeight = _wallTileMap.size.y / 2;

    Vector3 center = new Vector3(_wallTileMap.origin.x + halfWidth, _wallTileMap.origin.y + halfHeight, _wallTileMap.origin.z);
    return center;
}

My start function where all the methods are being called from:

private void Start()
{
    Directions initialDirection = Directions.UP;
    _fixedRandom = new System.Random(_levelSeed);
    _rooms = new Room[_numberOfRooms];
    for(int i = 0; i < _numberOfRooms; i++)
    {
        int randomHeight = _fixedRandom.Next(7, 21);
        int randomWidth = _fixedRandom.Next(7, 21);
        _rooms[i] = new Room(randomHeight, randomWidth);
    }

    int startX = _fixedRandom.Next(1, _mapSizeSquare);
    int startY = _fixedRandom.Next(1, _mapSizeSquare);

    _startingPoint = new Vector3Int(startX, startY, 0);
    SelectEndingPoint();

    GenerateRooms(0, initialDirection);
    CreateSubWallTiles();
    FloodWallTiles();
    
    GenerateSpawnPrefab();
    GenerateExitPrefab();

    SetAStarPathFinderAttributes();
}

You can see how it behaves in game as I walk around in this video I put on reddit: https://www.reddit.com/r/Unity2D/comments/sezxq6/need_help_troubleshooting_disappearing_tilemap/