Hi!
I have a weird issue. I've created two pages, one is saving data to one SharePoint Online list, the other one to second. Each of those lists have lookup columns. However in my forms I have replaced the native drop-down fields with combo fields.
When I am creating a new record using the first form, in webdeveloper console I see that it is sending a request to SharePoint actually setting the lookup column:

This control is created using a Combo Box.
Now, the second form, which has 5 lookups, is not setting them and when viewing the request using web developer I see, that it is actually not sending the proper datatype, but simply and ID of a selected record. Moreover, not for every field (even if a combo box has a value selected, it is not reflected when submitting the form):

Does anyone have faced such behavior? Do you know what is a reason? How it can be resolved?
Regards,
Tomasz