Using sculpting brushes with tiling not working as it should?

Hello, I tried to sculpt with some brushes I found on blendermarket. I wanted to make tileable textures, but I don’t think it’s working correctly, see screenshot. The only one I drew is the one at the top left. Is there something I don’t understand ?
Thanks

Did you make sure there are no mirror options on? X,Y,Z? I make this mistake all the time.