The Bug from Preview page is still there with 2.1.5

Hello there, i just renewed the Support, i am pretty sure you deserve it.
You said in the comment section, that you fixed that bug already, but this is a other bug.
When there is not compatible product and you click to next step, and then click on “preview” you will see the Preview page is mest up.

Just check it by yourself:
When you go from step 1 to 2 ( https://pro-gamer.ch/pc-konfigurator/) and then klick on “Preview” you will see it correctly showing: https://ibb.co/82MzRth

But when you go to step 3 and forward and klick on “preview” you will see this mest up preview: https://ibb.co/5n2NxsZ because no product is showing there.

This is the preview button: https://ibb.co/NWqtsy3