3*3 minimal tileset custom bitmask

Question

in this condition I have the grass at the crossing and it looks strange so I made this tile that has this bitmask, but why it's not working?

Comments

If you are talking about the tile pointed to here
Your bitmask is saying this tile layout (where x is tile, o is no tile, y is current location) :

o o x
x y x 
o o x    

I think you want

o o x  
x y x  
o o o     <---no bitmask bottom right 

I think.

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Thanks so much, but that unfortunately didn't solve the problem

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if it's not possible, I don't mind, but I will need a way to do that in godot 4 using match sides and corners

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Can you post an image of your bitmax similar to this one?

One thing I have done is edit my sprite sheet with the tiles and added the bitmask as a layer (you can see that in the second image on that page I linked).
I turn on the layer and re-export the image as png so that I can see in GODOT where my autotile is wrong.
You can see what the tilemap looks like with the bitmask visible in the last image in that link.
I have only tiled with 3.5 and I know 4.0 is different but maybe this could help.

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https://ibb.co/26fxK9q
https://ibb.co/w4PjZtQ

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It would be easier to tell if the first image had grid lines.
This shape:

o x o
x x o
o o o   

is the one that is being used in the second image intersection.
The shape you want is bitmasked like this:

o o x
x x x
o o o  

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no, sorry because I forgot to enable the grid: https://ibb.co/9nb7Mxv

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Hey I changed my comment because I was wrong. Have another look while I take a look at this with the grid lines.

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You aren't going to be able to use both as

o x o
x x o
o o o    

So you will either have to replace the new tile in the old tiles spot or manually insert the new tile into the tilemap.