Tile palette is adding extra copies of tiles and separating groups of tiles. Even if a rearrange them, whenever I add more, they automatically separate again and add again the extra copies of tiles (the ones at the left side). Is this a new feature? is this a bug?

Hi @Luis_Art_Guerra ,
Could you list out the steps of how you rearrange or added them?
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It would be nice if you can report an issue with a repro project through = Unity > Help > Report a Bug…
or
Let me know any more info you can provide in the Forums and I’ll investigate it.