>Is it supposed to be like that?
yes, because you will not be able to select that the preorder time if you have that item in the cart
(i.e it will be set back to what it was) though maybe that could be made clearer in the popup text (but you can easily adjust that text yourself as it suits you of course)

send me a url, “walkthrough” so to speak and settings please

i.e what i have to do at your site/url to experience what you are saying and what you expect to happen that does not happen , alongside screenshots of your settings

as what you are saying is happening is not what is supposed to happen but without seeing specific details/examples i cannot really say that much

(hope the above makes sense somewhat)

thanks for that
I believe I know why this happens.
let me check a few things here and fix this in an update (at some point today i would think)

(please leave the screenshots available for now so i can reproduce the settings here )

Just a quick update fyi:
I’m almost there, just need to check a few more things here with some edge cases.
Thanks for your patience