after reinstalling pwa, it seems to work better on dev env ...

config/sync/pwa.config.yml

@@ -0,0 +1,20 @@
+site_name: materiO
+short_name: materiO
+description: 'The material library your projects deserve'
+start_url: /
+lang: fr
+theme_color: '#ffffff'
+background_color: '#ffffff'
+display: standalone
+default_image: '0'
+urls_to_cache: "/en/pricing\r\n/en/blabla\r\n/en/base\r\n/en/showrooms"
+urls_to_exclude: "admin/.*\r\nuser/.*"
+offline_page: /offline
+cache_version: '2'
+cross_origin: false
+skip_waiting: false
+_core:
+  default_config_hash: cP1TZQyv1WdET3iepl2QoyOPK7VeO0xHm0lU_FU1Wmc
+image: /sites/default/files/pwa/materiopwaicon.png
+image_small: /sites/default/files/pwa/materiopwaicon.pngcopy.png
+image_very_small: /sites/default/files/pwa/materiopwaicon.pngcopy2.png