QtCreator does not list available kits on project creation

Creating a new project, Qt Creator asks for the minimal required Qt version. In my case, the default value is 5.9. If I look at the values in the list, I've got 5.6 to 5.11. I choose 5.9 and click on Next button. The dialog informs me that no kit is available. I click Back and Next again. The dialog shows several available kits.

Could not reproduce.