Ich habe jetzt mal den Chrome-Browser probiert, nachdem das Abschalten des Ad-Blockers auch nichts gebracht hat.
Auch dort erscheint die "Aktualisieren"-Schaltfläche nicht.
Dann den Customizer aufgerufen mit geöffneter Konsole:
customize.php?return=%2Fwp-admin%2Fpost.php%3Fpost%3D25%26action%3Dedit:1 The certificate used to load https://philatpolis.net/wp-admin/custo…26action%3Dedit uses an SSL certificate that will be distrusted in an upcoming release of Chrome. Once distrusted, users will be prevented from loading this resource. See https://g.co/chrome/symantecpkicerts for more information.
customize.php?return=%2Fwp-admin%2Fpost.php%3Fpost%3D25%26action%3Dedit:78 Slow network is detected. Fallback font will be used while loading: https://philatpolis.net/wp-includes/fonts/dashicons.ttf
customize.php?return=%2Fwp-admin%2Fpost.php%3Fpost%3D25%26action%3Dedit:78 Slow network is detected. Fallback font will be used while loading: https://philatpolis.net/wp-content/plu…t.woff2?v=4.6.1
customize.php?return=%2Fwp-admin%2Fpost.php%3Fpost%3D25%26action%3Dedit:78 Slow network is detected. Fallback font will be used while loading: https://philatpolis.net/wp-content/plu…nt.woff?v=4.6.1
customize.php?return=%2Fwp-admin%2Fpost.php%3Fpost%3D25%26action%3Dedit:78 Slow network is detected. Fallback font will be used while loading: https://philatpolis.net/wp-content/plu…ont.ttf?v=4.6.1
customize.php?return=%2Fwp-admin%2Fpost.php%3Fpost%3D25%26action%3Dedit:78 Slow network is detected. Fallback font will be used while loading: https://philatpolis.net/wp-content/plu…blishpress.woff
customize.php?return=%2Fwp-admin%2Fpost.php%3Fpost%3D25%26action%3Dedit:78 Slow network is detected. Fallback font will be used while loading: https://philatpolis.net/wp-content/plu…ublishpress.ttf
customize.php?return=%2Fwp-admin%2Fpost.php%3Fpost%3D25%26action%3Dedit:78 Slow network is detected. Fallback font will be used while loading: https://philatpolis.net/wp-content/plu…e-snippets.woff
load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,underscore,wp-a11y,wp-util,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable,jquery-&load[]=ui-draggable,jquery-ui-droppable,backbone,wp-backbone,jquery-ui-slider,jquery-touch-punch,iris,wp-color-picker,wp-ajax-response,&load[]=jquery-color,wp-lists,postbox,nav-menu,shortcode,utils,media-models,moxiejs,plupload,wp-plupload&ver=4.9:9 JQMIGRATE: Migrate is installed, version 1.4.1
mediaelement-and-player.min.js?ver=4.2.6-78496d1:12 Uncaught TypeError: Language code must have format 2-3 letters and. optionally, hyphen, underscore followed by 2 more letters
at Object.s.language (mediaelement-and-player.min.js?ver=4.2.6-78496d1:12)
at Object.o.5.15 (mediaelement-and-player.min.js?ver=4.2.6-78496d1:12)
at i (mediaelement-and-player.min.js?ver=4.2.6-78496d1:12)
at e (mediaelement-and-player.min.js?ver=4.2.6-78496d1:12)
at mediaelement-and-player.min.js?ver=4.2.6-78496d1:12
s.language @ mediaelement-and-player.min.js?ver=4.2.6-78496d1:12
o.5.15 @ mediaelement-and-player.min.js?ver=4.2.6-78496d1:12
i @ mediaelement-and-player.min.js?ver=4.2.6-78496d1:12
e @ mediaelement-and-player.min.js?ver=4.2.6-78496d1:12
(anonymous) @ mediaelement-and-player.min.js?ver=4.2.6-78496d1:12
mediaelement-migrate.min.js?ver=4.9:1 Uncaught ReferenceError: MediaElementPlayer is not defined
at mediaelement-migrate.min.js?ver=4.9:1
at mediaelement-migrate.min.js?ver=4.9:1
(anonymous) @ mediaelement-migrate.min.js?ver=4.9:1
(anonymous) @ mediaelement-migrate.min.js?ver=4.9:1
wp-mediaelement.min.js?ver=4.9:1 Uncaught TypeError: b(...).not(...).filter(...).mediaelementplayer is not a function
at HTMLDocument.a (wp-mediaelement.min.js?ver=4.9:1)
at i (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,underscore,wp-a11y,wp-util,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable,jquery-&load[]=ui-draggable,jquery-ui-droppable,backbone,wp-backbone,jquery-ui-slider,jquery-touch-punch,iris,wp-color-picker,wp-ajax-response,&load[]=jquery-color,wp-lists,postbox,nav-menu,shortcode,utils,media-models,moxiejs,plupload,wp-plupload&ver=4.9:2)
at Object.fireWith [as resolveWith] (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,underscore,wp-a11y,wp-util,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable,jquery-&load[]=ui-draggable,jquery-ui-droppable,backbone,wp-backbone,jquery-ui-slider,jquery-touch-punch,iris,wp-color-picker,wp-ajax-response,&load[]=jquery-color,wp-lists,postbox,nav-menu,shortcode,utils,media-models,moxiejs,plupload,wp-plupload&ver=4.9:2)
at Function.ready (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,underscore,wp-a11y,wp-util,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable,jquery-&load[]=ui-draggable,jquery-ui-droppable,backbone,wp-backbone,jquery-ui-slider,jquery-touch-punch,iris,wp-color-picker,wp-ajax-response,&load[]=jquery-color,wp-lists,postbox,nav-menu,shortcode,utils,media-models,moxiejs,plupload,wp-plupload&ver=4.9:2)
at HTMLDocument.K (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,underscore,wp-a11y,wp-util,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable,jquery-&load[]=ui-draggable,jquery-ui-droppable,backbone,wp-backbone,jquery-ui-slider,jquery-touch-punch,iris,wp-color-picker,wp-ajax-response,&load[]=jquery-color,wp-lists,postbox,nav-menu,shortcode,utils,media-models,moxiejs,plupload,wp-plupload&ver=4.9:2)
a @ wp-mediaelement.min.js?ver=4.9:1
i @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,underscore,wp-a11y,wp-util,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable,jquery-&load[]=ui-draggable,jquery-ui-droppable,backbone,wp-backbone,jquery-ui-slider,jquery-touch-punch,iris,wp-color-picker,wp-ajax-response,&load[]=jquery-color,wp-lists,postbox,nav-menu,shortcode,utils,media-models,moxiejs,plupload,wp-plupload&ver=4.9:2
fireWith @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,underscore,wp-a11y,wp-util,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable,jquery-&load[]=ui-draggable,jquery-ui-droppable,backbone,wp-backbone,jquery-ui-slider,jquery-touch-punch,iris,wp-color-picker,wp-ajax-response,&load[]=jquery-color,wp-lists,postbox,nav-menu,shortcode,utils,media-models,moxiejs,plupload,wp-plupload&ver=4.9:2
ready @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,underscore,wp-a11y,wp-util,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable,jquery-&load[]=ui-draggable,jquery-ui-droppable,backbone,wp-backbone,jquery-ui-slider,jquery-touch-punch,iris,wp-color-picker,wp-ajax-response,&load[]=jquery-color,wp-lists,postbox,nav-menu,shortcode,utils,media-models,moxiejs,plupload,wp-plupload&ver=4.9:2
K @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,underscore,wp-a11y,wp-util,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable,jquery-&load[]=ui-draggable,jquery-ui-droppable,backbone,wp-backbone,jquery-ui-slider,jquery-touch-punch,iris,wp-color-picker,wp-ajax-response,&load[]=jquery-color,wp-lists,postbox,nav-menu,shortcode,utils,media-models,moxiejs,plupload,wp-plupload&ver=4.9:2
Hilft das?
Edit: Edi: Nein, 4.9