Mendix 10.18.1 - bug - Importmapping shows name of input variable instead of output parameter

In Mendix 10.18.1, I have the following setup:

1. I Retrieve an HttpResponse from SAP
2. I use two different ImportMappings to extract a Project and WBSElement from the Response

However, as can be seen in the screenshot above, the name of the input variable is shown under the import mapping, instead of the names of the Project and WBSElement. 

This seems to be a bug. I hope this can be fixed, because ImportMapping-blocks become hard to tell apart in this way.