[1.0.0] (build 54889, Mac, Steam) Basic trains & rail building tutorial doesn't advance to next step

[lineapixel]

Good day.
I'm using the latest Steam version on Mac (upgraded from demo version), no mods installed.
I'm actually not able to get over step 2 in Basic trains & rail building tutorial.
I've been trying several times, and sometimes with a few variations (number of rail elements, rail direction, etc.) just to try, with no luck.
It just seems the game can't sense I have completed the requested step (yes, I am sure I did it).
I had no problem with any other tutorial, I actually skipped this one because it wasn't working.
I'm also attaching a screen rec to clarify.

Thanks.
Chris.

[boskid]

That tutorial asks you to build 4 curved-rails. For now you have only 1. Build more.

[lineapixel]

No, the tutorial is asking to add one 4-pieces curved rails, as it results from the images.
Anyway, according to your suggestion, I had to add six 4-pieces curved rails before the tutorial went to next step.
I can see this is not a bug, but anyway it's extremely unclear what is asked to be done.
I actually play on a localized version (italian). I tried with the english version too, but they're both unclear.

Factorio_1_0_0_2020-08-21_13-26-59.png (337.49 KiB) Viewed 539 times