QGIS Server 3.28 is currently certified for WMS 1.3.0 (see OGC Reference Implementation).
Per tenere d’occhio le regressioni, i test OGC vengono eseguiti quotidianamente sul branch master. I report corrispondenti vengono generati per diverse testuite OGC:
WMS 1.3.0 : http://test.qgis.org/ogc_cite/wms_130/
OGC API Features (aka WFS 3) : http://test.qgis.org/ogc_cite/ogcapif/
WFS 1.1.0 : http://test.qgis.org/ogc_cite/wfs_110/