diff --git a/playwright/e2e/read-receipts/editing-messages-in-threads.spec.ts b/playwright/e2e/read-receipts/editing-messages-in-threads.spec.ts
index da27d39a2c..092f1762ed 100644
--- a/playwright/e2e/read-receipts/editing-messages-in-threads.spec.ts
+++ b/playwright/e2e/read-receipts/editing-messages-in-threads.spec.ts
@@ -9,8 +9,14 @@ Please see LICENSE files in the repository root for full details.
 /* See readme.md for tips on writing these tests. */
 
 import { test } from ".";
+import { isDendrite } from "../../plugins/homeserver/dendrite";
 
 test.describe("Read receipts", { tag: "@mergequeue" }, () => {
+    test.skip(
+        isDendrite,
+        "due to Dendrite lacking full threads support https://github.com/element-hq/dendrite/issues/3283",
+    );
+
     test.describe("editing messages", () => {
         test.describe("in threads", () => {
             test("An edit of a threaded message makes the room unread", async ({
diff --git a/playwright/e2e/read-receipts/editing-messages-main-timeline.spec.ts b/playwright/e2e/read-receipts/editing-messages-main-timeline.spec.ts
index bc4eff711b..1cb871230c 100644
--- a/playwright/e2e/read-receipts/editing-messages-main-timeline.spec.ts
+++ b/playwright/e2e/read-receipts/editing-messages-main-timeline.spec.ts
@@ -9,8 +9,14 @@ Please see LICENSE files in the repository root for full details.
 /* See readme.md for tips on writing these tests. */
 
 import { test } from ".";
+import { isDendrite } from "../../plugins/homeserver/dendrite";
 
 test.describe("Read receipts", { tag: "@mergequeue" }, () => {
+    test.skip(
+        isDendrite,
+        "due to Dendrite lacking full threads support https://github.com/element-hq/dendrite/issues/3283",
+    );
+
     test.describe("editing messages", () => {
         test.describe("in the main timeline", () => {
             test("Editing a message leaves a room read", async ({ roomAlpha: room1, roomBeta: room2, util, msg }) => {
diff --git a/playwright/e2e/read-receipts/editing-messages-thread-roots.spec.ts b/playwright/e2e/read-receipts/editing-messages-thread-roots.spec.ts
index a750fd9ba7..292f1137dc 100644
--- a/playwright/e2e/read-receipts/editing-messages-thread-roots.spec.ts
+++ b/playwright/e2e/read-receipts/editing-messages-thread-roots.spec.ts
@@ -9,8 +9,14 @@ Please see LICENSE files in the repository root for full details.
 /* See readme.md for tips on writing these tests. */
 
 import { test } from ".";
+import { isDendrite } from "../../plugins/homeserver/dendrite";
 
 test.describe("Read receipts", { tag: "@mergequeue" }, () => {
+    test.skip(
+        isDendrite,
+        "due to Dendrite lacking full threads support https://github.com/element-hq/dendrite/issues/3283",
+    );
+
     test.describe("editing messages", () => {
         test.describe("thread roots", () => {
             test("An edit of a thread root leaves the room read", async ({
diff --git a/playwright/e2e/read-receipts/new-messages-in-threads.spec.ts b/playwright/e2e/read-receipts/new-messages-in-threads.spec.ts
index 8deef2d2f5..89469fe948 100644
--- a/playwright/e2e/read-receipts/new-messages-in-threads.spec.ts
+++ b/playwright/e2e/read-receipts/new-messages-in-threads.spec.ts
@@ -9,8 +9,14 @@ Please see LICENSE files in the repository root for full details.
 /* See readme.md for tips on writing these tests. */
 
 import { many, test } from ".";
+import { isDendrite } from "../../plugins/homeserver/dendrite";
 
 test.describe("Read receipts", { tag: "@mergequeue" }, () => {
+    test.skip(
+        isDendrite,
+        "due to Dendrite lacking full threads support https://github.com/element-hq/dendrite/issues/3283",
+    );
+
     test.describe("new messages", () => {
         test.describe("in threads", () => {
             test("Receiving a message makes a room unread", async ({
diff --git a/playwright/e2e/read-receipts/new-messages-main-timeline.spec.ts b/playwright/e2e/read-receipts/new-messages-main-timeline.spec.ts
index 4f94e7b09f..3937b16426 100644
--- a/playwright/e2e/read-receipts/new-messages-main-timeline.spec.ts
+++ b/playwright/e2e/read-receipts/new-messages-main-timeline.spec.ts
@@ -9,8 +9,14 @@ Please see LICENSE files in the repository root for full details.
 /* See readme.md for tips on writing these tests. */
 
 import { many, test } from ".";
+import { isDendrite } from "../../plugins/homeserver/dendrite";
 
 test.describe("Read receipts", { tag: "@mergequeue" }, () => {
+    test.skip(
+        isDendrite,
+        "due to Dendrite lacking full threads support https://github.com/element-hq/dendrite/issues/3283",
+    );
+
     test.describe("new messages", () => {
         test.describe("in the main timeline", () => {
             test("Receiving a message makes a room unread", async ({
diff --git a/playwright/e2e/read-receipts/new-messages-thread-roots.spec.ts b/playwright/e2e/read-receipts/new-messages-thread-roots.spec.ts
index 0e101d311a..950e3f83ea 100644
--- a/playwright/e2e/read-receipts/new-messages-thread-roots.spec.ts
+++ b/playwright/e2e/read-receipts/new-messages-thread-roots.spec.ts
@@ -9,8 +9,14 @@ Please see LICENSE files in the repository root for full details.
 /* See readme.md for tips on writing these tests. */
 
 import { many, test } from ".";
+import { isDendrite } from "../../plugins/homeserver/dendrite";
 
 test.describe("Read receipts", { tag: "@mergequeue" }, () => {
+    test.skip(
+        isDendrite,
+        "due to Dendrite lacking full threads support https://github.com/element-hq/dendrite/issues/3283",
+    );
+
     test.describe("new messages", () => {
         test.describe("thread roots", () => {
             test("Reading a thread root does not mark the thread as read", async ({
diff --git a/playwright/e2e/read-receipts/reactions-in-threads.spec.ts b/playwright/e2e/read-receipts/reactions-in-threads.spec.ts
index eb733d3a12..7af21e6799 100644
--- a/playwright/e2e/read-receipts/reactions-in-threads.spec.ts
+++ b/playwright/e2e/read-receipts/reactions-in-threads.spec.ts
@@ -9,8 +9,14 @@ Please see LICENSE files in the repository root for full details.
 /* See readme.md for tips on writing these tests. */
 
 import { test, expect } from ".";
+import { isDendrite } from "../../plugins/homeserver/dendrite";
 
 test.describe("Read receipts", { tag: "@mergequeue" }, () => {
+    test.skip(
+        isDendrite,
+        "due to Dendrite lacking full threads support https://github.com/element-hq/dendrite/issues/3283",
+    );
+
     test.describe("reactions", () => {
         test.describe("in threads", () => {
             test("A reaction to a threaded message does not make the room unread", async ({
diff --git a/playwright/e2e/read-receipts/reactions-main-timeline.spec.ts b/playwright/e2e/read-receipts/reactions-main-timeline.spec.ts
index d8c1647383..1b57728935 100644
--- a/playwright/e2e/read-receipts/reactions-main-timeline.spec.ts
+++ b/playwright/e2e/read-receipts/reactions-main-timeline.spec.ts
@@ -9,8 +9,14 @@ Please see LICENSE files in the repository root for full details.
 /* See readme.md for tips on writing these tests. */
 
 import { test } from ".";
+import { isDendrite } from "../../plugins/homeserver/dendrite";
 
 test.describe("Read receipts", { tag: "@mergequeue" }, () => {
+    test.skip(
+        isDendrite,
+        "due to Dendrite lacking full threads support https://github.com/element-hq/dendrite/issues/3283",
+    );
+
     test.describe("reactions", () => {
         test.describe("in the main timeline", () => {
             test("Receiving a reaction to a message does not make a room unread", async ({
diff --git a/playwright/e2e/read-receipts/redactions-in-threads.spec.ts b/playwright/e2e/read-receipts/redactions-in-threads.spec.ts
index dc229d0b1b..ab4e77471d 100644
--- a/playwright/e2e/read-receipts/redactions-in-threads.spec.ts
+++ b/playwright/e2e/read-receipts/redactions-in-threads.spec.ts
@@ -9,8 +9,14 @@ Please see LICENSE files in the repository root for full details.
 /* See readme.md for tips on writing these tests. */
 
 import { test } from ".";
+import { isDendrite } from "../../plugins/homeserver/dendrite";
 
 test.describe("Read receipts", { tag: "@mergequeue" }, () => {
+    test.skip(
+        isDendrite,
+        "due to Dendrite lacking full threads support https://github.com/element-hq/dendrite/issues/3283",
+    );
+
     test.describe("redactions", () => {
         test.describe("in threads", () => {
             test("Redacting the threaded message pointed to by my receipt leaves the room read", async ({
diff --git a/playwright/e2e/read-receipts/redactions-main-timeline.spec.ts b/playwright/e2e/read-receipts/redactions-main-timeline.spec.ts
index 356d03938f..90cc616736 100644
--- a/playwright/e2e/read-receipts/redactions-main-timeline.spec.ts
+++ b/playwright/e2e/read-receipts/redactions-main-timeline.spec.ts
@@ -9,8 +9,14 @@ Please see LICENSE files in the repository root for full details.
 /* See readme.md for tips on writing these tests. */
 
 import { test } from ".";
+import { isDendrite } from "../../plugins/homeserver/dendrite";
 
 test.describe("Read receipts", { tag: "@mergequeue" }, () => {
+    test.skip(
+        isDendrite,
+        "due to Dendrite lacking full threads support https://github.com/element-hq/dendrite/issues/3283",
+    );
+
     test.describe("redactions", () => {
         test.describe("in the main timeline", () => {
             test("Redacting the message pointed to by my receipt leaves the room read", async ({
diff --git a/playwright/e2e/read-receipts/redactions-thread-roots.spec.ts b/playwright/e2e/read-receipts/redactions-thread-roots.spec.ts
index d875b0cecb..691e9a39a8 100644
--- a/playwright/e2e/read-receipts/redactions-thread-roots.spec.ts
+++ b/playwright/e2e/read-receipts/redactions-thread-roots.spec.ts
@@ -9,8 +9,14 @@ Please see LICENSE files in the repository root for full details.
 /* See readme.md for tips on writing these tests. */
 
 import { test } from ".";
+import { isDendrite } from "../../plugins/homeserver/dendrite";
 
 test.describe("Read receipts", { tag: "@mergequeue" }, () => {
+    test.skip(
+        isDendrite,
+        "due to Dendrite lacking full threads support https://github.com/element-hq/dendrite/issues/3283",
+    );
+
     test.describe("redactions", () => {
         test.describe("thread roots", () => {
             test("Redacting a thread root after it was read leaves the room read", async ({