This may be due to the problem described in topic Looks like greenbone/vulnerability-tests version 5958053f7549 is corrupted - #11 by brafreider.
The GVMD_DATA component, which includes the scan configs, report formats and port lists, is updated at the end of the feed update, and due to the problem above the feed update may get stuck earlier at the SCAP component.
Please check the above topic for any updates regarding this.