Incorrect behaviour of occurrence title generation in a single-select option-set

[alansemenov]

Now:

Main title is initially the selected option's label (here: "Option 1") which after changing field names changes to a first non-empty property value.
Sub-title is always option-set's label (here: "Single selection"), which is of not much use since we already have it as the big title above the option-set.

Should be:

1. After an option is selected, we should show only the selected option's label (here "Option 1") as the main title (unless of course there are some default values in the form fields, in which case see 2. below). So, same as now but without the sub-title.

2. When user starts changing the field values, keep the selected option's label as the main title and the first non-blank property value should become the sub-title.