diff --git a/tests/test_datatype_inheritance.py b/tests/test_datatype_inheritance.py
index 4ab7311ac56baebadd24fb05e967c29fd769c281..cac389f606e209eca2f031aa409ecd3ca01b20ef 100644
--- a/tests/test_datatype_inheritance.py
+++ b/tests/test_datatype_inheritance.py
@@ -27,7 +27,7 @@ import caosdb as db
 from caosdb.connection.connection import get_connection
 
 from caosdb.exceptions import TransactionError
-from pytest import raises
+from pytest import mark, raises
 
 
 def setup_function(function):
@@ -154,6 +154,7 @@ def test_datatype_overriding_update():
     assert str("DATETIME").lower() == rt.get_properties()[0].datatype.lower()
 
 
+@mark.xfail(reason="https://gitlab.com/linkahead/linkahead-server/-/issues/257")
 def test_recordtype_to_record():
     rt = RecordType(name="SimpleTextRecordType")
     rt.datatype = "TEXT"
@@ -169,9 +170,9 @@ def test_recordtype_to_record():
 
     rec = Record().add_parent(name="SimpleTextRecordType").insert()
     assert rec.is_valid()
-    # TODO
-    # assert rec.datatype is not None
-    # assert str("TEXT").lower() == rec.datatype.lower()
+    # This fails to inherit the datatype
+    assert rec.datatype is not None
+    assert str("TEXT").lower() == rec.datatype.lower()
 
 
 def test_concrete_property():
diff --git a/tests/test_issues_server.py b/tests/test_issues_server.py
index 7f76085d1b675968f0aed29678fe9b89caaf0e7e..7a2b470a5a9e2b1fdd1c5284a91566f4192a513c 100644
--- a/tests/test_issues_server.py
+++ b/tests/test_issues_server.py
@@ -1,10 +1,10 @@
 # -*- coding: utf-8 -*-
 # This file is a part of the CaosDB Project.
 #
-# Copyright (c) 2020 - 2022 IndiScale GmbH <info@indiscale.com>
+# Copyright (c) 2020 - 2024 IndiScale GmbH <info@indiscale.com>
 # Copyright (c) 2022 Daniel Hornung <d.hornung@indiscale.com>
 # Copyright (c) 2020 Florian Spreckelsen <f.spreckelsen@indiscale.com>
-# Copyright (c) 2021 - 2022 Timm Fitschen <t.fitschen@indiscale.com>
+# Copyright (c) 2021 - 2024 Timm Fitschen <t.fitschen@indiscale.com>
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as
@@ -19,18 +19,18 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program. If not, see <https://www.gnu.org/licenses/>.
 
-"""Tests for issues on gitlab.com, project caosdb-server."""
+"""Tests for issues on gitlab.com, project linkahead-server."""
 
 import math
 import os
 import tempfile
 import time
 
-import caosdb as db
+import linkahead as db
 import pytest
 
-from caosdb import administration as admin
-from caosdb.exceptions import (TransactionError, HTTPClientError, HTTPURITooLongError)
+from linkahead import administration as admin
+from linkahead.exceptions import (TransactionError, HTTPClientError, HTTPURITooLongError)
 
 CURATOR_ROLE = "curator"
 
@@ -1453,3 +1453,26 @@ def test_235_long_name():
     except Exception as exc:
         assert not isinstance(exc, db.HTTPServerError)
         # TODO more specific error should be asserted
+
+
+@pytest.mark.xfail(reason="https://gitlab.com/linkahead/linkahead-server/-/issues/248")
+def test_248():
+    """Querying for entities with property fails if using ID."""
+    rt = db.RecordType(name="RT1").insert()
+    prop = db.Property(name="prop", datatype=db.DOUBLE).insert()
+    rec = db.Record().add_parent(rt).add_property(prop, value=23).insert()
+    results = db.execute_query(f"FIND Entity with {prop.id}")
+    assert len(results) == 1
+
+
+@pytest.mark.xfail(reason="https://gitlab.com/linkahead/linkahead-server/-/issues/253")
+def test_253():
+    """Value in string queries may not start with large number of digits."""
+    test_strings = [
+        "0123456789",
+        "hello" + "0123456789" * 5 + "world",
+        "0123456789" * 5 + "world",
+    ]
+    for string in test_strings:
+        results = db.execute_query(f"FIND Entity with prop={string}")
+        assert len(results) == 0