The defaults for showIcon and showText are undocumented at https://docs.telerik.com/kendo-ui/api/javascript/ui/breadcrumb/configuration/items.showicon and https://docs.telerik.com/kendo-ui/api/javascript/ui/breadcrumb/configuration/items.showtext respectively.
I understand they are true and false respectively when type is "rootitem" and the opposite otherwise.
More sensible defaults would be along the lines of:
showIcon = !!icon
Hello Anna,
Indeed you are correct that there is a difference in the default values for the items collection item types. The documentation and API Reference could be improved further by adding additional information for the same. Therefore, I have linked a GitHub issue to this Feedback Item for improving the documentation:
I have also updated your Telerik Points for reporting this discrepancy and also helping us improve the existing documentation.
Regards,
Dimitar
Progress Telerik