Why does a seam appear and the texture is cut when mirroring a model?

Question

Blender

Good afternoon,

I ran into such a nuisance, painted part of the table, threw on the texture, mirrored it, and at the time of setting the scene I noticed that the use of Mirror was clearly visible on the table.
Maybe someone knows the origin of this and how to avoid it?
Picture

Answer 1

I can not give an exact answer, attach screenshots of the problem. I can only assume that the problem is in the engine. If you have EEVEE, put CYCLES.