I enabled Dyntopo, but Symmetrize seems to have been active already. As soon as I start stroking the mesh, it does it double. I just don't see how to disable it.
$\begingroup$
$\endgroup$
$\begingroup$
$\endgroup$
I wasn't able to find the dropdown as mentioned earlier, but the later Blender still has settings under Symmetry > Mirror [x][y][z].