In the lower window you see a document in read mode, where there is an document attached. The view command on the attachment results in an error, that there is no viewer for this file type (mmap) and the option to open the document is offered. Selctign open results in the “Open” dialog show below.Instead of opening the document Notes shows the open application dialog where the content of {application name}.app is shown (in this case it’s Mindjet MindManager).
Workaround:
If the user is aware of the problem he can navigate one hierarchy up, where he sees the Mindjet MindManager application. he is then able to select the application and open it.