Use "props" not "[on,attrs]"

src/components/messages/SeenBy.vue

@@ -2,8 +2,8 @@
   <div>
     <div class="seen-by-container">
       <v-tooltip top open-delay="500" v-if="seenBy.length > 0">
-        <template v-slot:activator="{ on, attrs }">
-          <div v-bind="attrs" v-on="on" class="clickable">
+        <template v-slot:activator="{ props }">
+          <div v-bind="props" class="clickable">
             <div class="more" v-if="seenBy.length > 0">{{ moreItems }}</div>
             <transition-group name="list" tag="div" v-if="seenBy.length > 0">
               <v-avatar v-for="(member, index) in seenBy" :key="member.roomMember.userId" class="seen-by-user" size="16" color="grey"

src/components/messages/channel/QuickReactionsChannel.vue

@@ -7,8 +7,8 @@
       v-show="name == '❤️'"
     >
       <v-tooltip top v-if="value.includes($matrix.currentUserId)">
-        <template v-slot:activator="{ on, attrs }">
-          <v-icon class="ma-1 ml-0 clickable" v-bind="attrs" v-on="on" @click="onClickEmoji(name)" color="#ff3300">$vuetify.icons.ic_like_filled</v-icon>
+        <template v-slot:activator="{ props }">
+          <v-icon class="ma-1 ml-0 clickable" v-bind="props" @click="onClickEmoji(name)" color="#ff3300">$vuetify.icons.ic_like_filled</v-icon>
         </template>
         <span>{{ $t("global.click_to_remove") }}</span>
       </v-tooltip>