diff --git a/.vscode/launch.json b/.vscode/launch.json
index b9506cd09..875c603fa 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -4,7 +4,8 @@
     {
       "name": "Listen for Xdebug",
       "type": "php",
-      "request": "launch"
+      "request": "launch",
+      "port": 9003
     },
     {
       "name": "Debug remote :40000",
diff --git a/tests/acceptance/features/apiSpacesShares/copySpaces.feature b/tests/acceptance/features/apiSpacesShares/copySpaces.feature
index 8eba2c2cf..df1ccb7c9 100644
--- a/tests/acceptance/features/apiSpacesShares/copySpaces.feature
+++ b/tests/acceptance/features/apiSpacesShares/copySpaces.feature
@@ -280,6 +280,7 @@ Feature: copy file
       | sharee          | Alice         |
       | shareType       | user          |
       | permissionsRole | Secure Viewer |
+    And user "Alice" has a share "testshare" synced
     When user "Alice" copies file "/testshare/testshare.txt" from space "Shares" to "/testshare.txt" inside space "Personal" using the WebDAV API
     Then the HTTP status code should be "403"
     And for user "Alice" the space "Personal" should not contain these entries:
diff --git a/tests/acceptance/features/coreApiWebdavPreviews/previews.feature b/tests/acceptance/features/coreApiWebdavPreviews/previews.feature
index c9d32a505..6491b02c5 100644
--- a/tests/acceptance/features/coreApiWebdavPreviews/previews.feature
+++ b/tests/acceptance/features/coreApiWebdavPreviews/previews.feature
@@ -323,7 +323,7 @@ Feature: previews of files downloaded through the webdav API
     And user "Alice" has uploaded file "filesForUpload/testavatar.jpg" to "/testavatar.jpg"
     When user "Alice" tries to download the preview of "/testavatar.jpg" with width "32" and height "32" and preview set to 0 using the WebDAV API
     Then the HTTP status code should be "200"
-    And the downloaded image should be "1240" pixels wide and "648" pixels high
+    And the downloaded image should be "1402" pixels wide and "500" pixels high
     Examples:
       | dav-path-version |
       | old              |
@@ -376,8 +376,8 @@ Feature: previews of files downloaded through the webdav API
       | THUMBNAILS_MAX_INPUT_WIDTH           | 200   |
       | THUMBNAILS_MAX_INPUT_HEIGHT          | 200   |
     And using <dav-path-version> DAV path
-    And user "Alice" has uploaded file "filesForUpload/testavatar.jpg" to "/testimage.jpg"
-    When user "Alice" downloads the preview of "/testimage.jpg" with width "36" and height "36" and processor thumbnail using the WebDAV API
+    And user "Alice" has uploaded file "filesForUpload/testavatar.png" to "/testimage.png"
+    When user "Alice" downloads the preview of "/testimage.png" with width "36" and height "36" and processor thumbnail using the WebDAV API
     Then the HTTP status code should be "403"
     And the value of the item "/d:error/s:message" in the response should be "thumbnails: image is too large"
     Examples:
diff --git a/tests/acceptance/filesForUpload/simple.pdf b/tests/acceptance/filesForUpload/simple.pdf
index 305e543db..a7ae3e9fb 100644
Binary files a/tests/acceptance/filesForUpload/simple.pdf and b/tests/acceptance/filesForUpload/simple.pdf differ
diff --git a/tests/acceptance/filesForUpload/testavatar.jpg b/tests/acceptance/filesForUpload/testavatar.jpg
index eae213b82..62cb25678 100644
Binary files a/tests/acceptance/filesForUpload/testavatar.jpg and b/tests/acceptance/filesForUpload/testavatar.jpg differ
diff --git a/tests/acceptance/filesForUpload/testavatar.png b/tests/acceptance/filesForUpload/testavatar.png
index bd9c3cb1e..4df347033 100644
Binary files a/tests/acceptance/filesForUpload/testavatar.png and b/tests/acceptance/filesForUpload/testavatar.png differ
diff --git a/tests/acceptance/fixtures/fill.png b/tests/acceptance/fixtures/fill.png
index 7110deebe..ab89e0935 100644
Binary files a/tests/acceptance/fixtures/fill.png and b/tests/acceptance/fixtures/fill.png differ
diff --git a/tests/acceptance/fixtures/fit.png b/tests/acceptance/fixtures/fit.png
index 75ebf39b0..d2da3cf4a 100644
Binary files a/tests/acceptance/fixtures/fit.png and b/tests/acceptance/fixtures/fit.png differ
diff --git a/tests/acceptance/fixtures/resize.png b/tests/acceptance/fixtures/resize.png
index 8dad978da..170bfb0f3 100644
Binary files a/tests/acceptance/fixtures/resize.png and b/tests/acceptance/fixtures/resize.png differ
diff --git a/tests/acceptance/fixtures/thumbnail.png b/tests/acceptance/fixtures/thumbnail.png
index 7110deebe..ab89e0935 100644
Binary files a/tests/acceptance/fixtures/thumbnail.png and b/tests/acceptance/fixtures/thumbnail.png differ
diff --git a/tests/acceptance/fixtures/unicode-fixture.png b/tests/acceptance/fixtures/unicode-fixture.png
index 04837c22b..768f1b6a7 100644
Binary files a/tests/acceptance/fixtures/unicode-fixture.png and b/tests/acceptance/fixtures/unicode-fixture.png differ