Breadcrumbs is a fantastic feature and a life-saver in big schemas. However, they badly fulfil their purpose with conditional schema composition.

For example, consider the following breadcrumb:

Property root > allOf > item 0 > then > myproperty_a

In this shape it doesn't clearly tell me which branch (with which condition) I am looking at. All it tells me is that this is a property in a branch when the (unknown) condition evaluates to true (because the keyword then is shown and not else).

In order to understand the full picture, I probably need to click on item 0, locate the If (condition) block, memorize the condition and then go back here.

It would be much more informative to reflect the condition directly in the breadcrumb. For example, either as:

Property root > allOf > If (condition) > then > myproperty_a

Property root > allOf > If (condition) > else > myproperty_b

or

Property root > allOf > (condition) > myproperty_a

Property root > allOf > Not (condition) > myproperty_b