to fix the image flickering issue, change the v-img tage img tag.

client/components/common/nav-header.vue

@@ -21,7 +21,7 @@
       v-flex(xs5, md4)
         v-toolbar.nav-header-inner(color='black', dark, flat, :class='$vuetify.rtl ? `pr-3` : `pl-3`')
           v-avatar(tile, size='34', @click='goHome')
-            v-img.org-logo(:src='logoUrl')
+            img(:src='logoUrl', alt='Logo', class="org-logo")
           //- v-menu(open-on-hover, offset-y, bottom, left, min-width='250', transition='slide-y-transition')
           //-   template(v-slot:activator='{ on }')
           //-     v-app-bar-nav-icon.btn-animate-app(v-on='on', :class='$vuetify.rtl ? `mx-0` : ``')