Your machine may have this problem

Point at which the x-axis moves from + to -.
In terms of a cylinder, bulges can be seen on the right and left when looking at the printer from the front. If not, it may be an individual difference. To be honest, it may be hard to see on the cylinder.
My printer, which had been cleaned and the belt replaced by support, was very faint when printing cylinders.

(Until I sent it to support, the vertical lines were quite visible.

It certainly does not seem to be that clear in a cylinder.
However, when printing models with many curved surfaces, this effect may be significant.

like the model in my photo.

It certainly does not seem to be that clear in a cylinder.
However, when printing models with many curved surfaces, this effect may be significant.

like the model in my photo.

Because support has been telling us there is nothing more we can do.

This is what it looks like.

I believe there is a video (recent) on YouTube (Teaching Tech) about this. It has to do with moving the start/return point to offset the position. No more straight lines, just a gradual progression around the build.

I have just tried the same thing with a cylinder. The seam is slightly flattened. But I can find absolutely no bulge opposite.

I have loaded the Alpaca, but I don’t know where to look there. Printing it for so long with a lot of filament to find nothing in the end is not worth it.

Maybe it’s an individual difference.
Alpacas have nothing to do with this issue, they are just cute!

Support is currently working on a slicer algorithm after they sent it back to me, after I went over to the development team and asked them if they could help me with the slicer algorithm? They are trying to figure out if there is a slicer algorithm or something that can solve this problem.

Support has reached out to the development team to see if there is an algorithmic solution to this problem.

Now we are waiting for the results.
Maybe something good will happen when we update the formware.

But I think this is stepper motor derived, so I don’t have much hope!

I have a Prusa and a BL and I like the Prusa more.