diff --git a/ts/background.ts b/ts/background.ts
index 6daa36f61d..a9f342b16c 100644
--- a/ts/background.ts
+++ b/ts/background.ts
@@ -2507,6 +2507,23 @@ export async function startApp(): Promise<void> {
       );
       return;
     }
+    if (conversation?.isBlocked()) {
+      log.info(
+        `onTyping: conversation ${conversation.idForLogging()} is blocked, dropping typing message`
+      );
+      return;
+    }
+    const senderConversation = window.ConversationController.get(senderId);
+    if (!senderConversation) {
+      log.warn('onTyping: No conversation for sender!');
+      return;
+    }
+    if (senderConversation.isBlocked()) {
+      log.info(
+        `onTyping: sender ${conversation.idForLogging()} is blocked, dropping typing message`
+      );
+      return;
+    }
 
     conversation.notifyTyping({
       isTyping: started,
diff --git a/ts/models/conversations.ts b/ts/models/conversations.ts
index 9bbc71fc1d..9d25a63824 100644
--- a/ts/models/conversations.ts
+++ b/ts/models/conversations.ts
@@ -879,7 +879,7 @@ export class ConversationModel extends window.Backbone
 
   block({ viaStorageServiceSync = false } = {}): void {
     let blocked = false;
-    const isBlocked = this.isBlocked();
+    const wasBlocked = this.isBlocked();
 
     const uuid = this.get('uuid');
     if (uuid) {
@@ -899,14 +899,19 @@ export class ConversationModel extends window.Backbone
       blocked = true;
     }
 
-    if (!viaStorageServiceSync && !isBlocked && blocked) {
-      this.captureChange('block');
+    if (blocked && !wasBlocked) {
+      // We need to force a props refresh - blocked state is not in backbone attributes
+      this.trigger('change', this, { force: true });
+
+      if (!viaStorageServiceSync) {
+        this.captureChange('block');
+      }
     }
   }
 
   unblock({ viaStorageServiceSync = false } = {}): boolean {
     let unblocked = false;
-    const isBlocked = this.isBlocked();
+    const wasBlocked = this.isBlocked();
 
     const uuid = this.get('uuid');
     if (uuid) {
@@ -926,8 +931,13 @@ export class ConversationModel extends window.Backbone
       unblocked = true;
     }
 
-    if (!viaStorageServiceSync && isBlocked && unblocked) {
-      this.captureChange('unblock');
+    if (unblocked && wasBlocked) {
+      // We need to force a props refresh - blocked state is not in backbone attributes
+      this.trigger('change', this, { force: true });
+
+      if (!viaStorageServiceSync) {
+        this.captureChange('unblock');
+      }
     }
 
     return unblocked;
diff --git a/ts/textsecure/MessageReceiver.ts b/ts/textsecure/MessageReceiver.ts
index 7aa8a0ddc6..021ae4e674 100644
--- a/ts/textsecure/MessageReceiver.ts
+++ b/ts/textsecure/MessageReceiver.ts
@@ -4,7 +4,7 @@
 /* eslint-disable no-bitwise */
 /* eslint-disable camelcase */
 
-import { isNumber, map } from 'lodash';
+import { isNumber } from 'lodash';
 import PQueue from 'p-queue';
 import { v4 as getGuid } from 'uuid';
 
@@ -2626,24 +2626,40 @@ export default class MessageReceiver
     envelope: ProcessedEnvelope,
     blocked: Proto.SyncMessage.IBlocked
   ): Promise<void> {
-    log.info('Setting these numbers as blocked:', blocked.numbers);
     if (blocked.numbers) {
+      log.info('handleBlocked: Blocking these numbers:', blocked.numbers);
       await this.storage.put('blocked', blocked.numbers);
     }
     if (blocked.uuids) {
       const uuids = blocked.uuids.map((uuid, index) => {
         return normalizeUuid(uuid, `handleBlocked.uuids.${index}`);
       });
-      log.info('Setting these uuids as blocked:', uuids);
+      log.info('handleBlocked: Blocking these uuids:', uuids);
       await this.storage.put('blocked-uuids', uuids);
     }
 
-    const groupIds = map(blocked.groupIds, groupId => Bytes.toBinary(groupId));
-    log.info(
-      'Setting these groups as blocked:',
-      groupIds.map(groupId => `group(${groupId})`)
-    );
-    await this.storage.put('blocked-groups', groupIds);
+    if (blocked.groupIds) {
+      const groupV1Ids: Array<string> = [];
+      const groupIds: Array<string> = [];
+
+      blocked.groupIds.forEach(groupId => {
+        if (groupId.byteLength === GROUPV1_ID_LENGTH) {
+          groupV1Ids.push(Bytes.toBinary(groupId));
+          groupIds.push(this.deriveGroupV2FromV1(groupId));
+        } else if (groupId.byteLength === GROUPV2_ID_LENGTH) {
+          groupIds.push(Bytes.toBase64(groupId));
+        } else {
+          log.error('handleBlocked: Received invalid groupId value');
+        }
+      });
+      log.info(
+        'handleBlocked: Blocking these groups - v2:',
+        groupIds.map(groupId => `groupv2(${groupId})`),
+        'v1:',
+        groupV1Ids.map(groupId => `group(${groupId})`)
+      );
+      await this.storage.put('blocked-groups', [...groupIds, ...groupV1Ids]);
+    }
 
     this.removeFromCache(envelope);
   }