Hi, how do you prepare Swagger UI and what URI do you use ?
FYI, in CXF 3.1.7 Swagger2Feature auto-links to SwaggerUI. I've just tried a CXF spring_boot_scan demo on the master (3.2.0-SNAPSHOT), I've disabled the Swagger2Feature auto-discovery and added your code snippet, and could access Swagger UI as per the demo instructions.
By the way, there were few additional fixes in CXF 3.1.8, it will be released very shortly, it is available at
right now, can you try it ?