diff --git a/test/Base_Tests/src/Data/Json_Spec.enso b/test/Base_Tests/src/Data/Json_Spec.enso
index 2dfd4b1c2b6c..59f7c2cc96f8 100644
--- a/test/Base_Tests/src/Data/Json_Spec.enso
+++ b/test/Base_Tests/src/Data/Json_Spec.enso
@@ -117,7 +117,7 @@ add_specs suite_builder =
             '{"type":"Date_Time","constructor":"new","year":2023,"month":9,"day":29,"hour":11,"second":52}'.should_parse_as (JS_Object.from_pairs [["type", "Date_Time"], ["constructor", "new"], ["year", 2023], ["month", 9], ["day", 29], ["hour", 11], ["second", 52]])
             '{"type":"Date_Time","constructor":"new","year":2023,"month":9,"day":29,"hour":11,"minute":52,"nanosecond":572104300}'.should_parse_as (JS_Object.from_pairs [["type", "Date_Time"], ["constructor", "new"], ["year", 2023], ["month", 9], ["day", 29], ["hour", 11], ["minute", 52], ["nanosecond", 572104300]])
 
-        group_builder.specify "should be able to read a JSON file with a BOM indicating UTF-16 encoding" <|
+        group_builder.specify "should be able to read a JSON file with a BOM indicating UTF-16 encoding" pending="Encoding.default turned off temporarily" <|
             utf_16_le_bom = [-1, -2]
             bytes = utf_16_le_bom + ("{}".bytes Encoding.utf_16_le)
             f = File.create_temporary_file "json-with-bom" ".json"
diff --git a/test/Base_Tests/src/Data/Text/Encoding_Spec.enso b/test/Base_Tests/src/Data/Text/Encoding_Spec.enso
index 16e14c904deb..fc917137f143 100644
--- a/test/Base_Tests/src/Data/Text/Encoding_Spec.enso
+++ b/test/Base_Tests/src/Data/Text/Encoding_Spec.enso
@@ -68,7 +68,7 @@ add_specs suite_builder =
             default_warning.should_equal invalid_ascii_out
             Problems.get_attached_warnings default_warning . should_contain_the_same_elements_as problems
 
-    suite_builder.group "Default Encoding" group_builder->
+    suite_builder.group "Default Encoding" pending="Encoding.default turned off temporarily" group_builder->
         group_builder.specify "should try reading as UTF-8 by default" <|
             bytes = [65, -60, -123, -60, -103]
             #        A   ą          ę
diff --git a/test/Table_Tests/src/IO/Delimited_Read_Spec.enso b/test/Table_Tests/src/IO/Delimited_Read_Spec.enso
index e805ffc61488..ca5c3ec1e386 100644
--- a/test/Table_Tests/src/IO/Delimited_Read_Spec.enso
+++ b/test/Table_Tests/src/IO/Delimited_Read_Spec.enso
@@ -475,7 +475,7 @@ add_specs suite_builder =
             Delimited_Format.Delimited ',' . with_line_endings Line_Ending_Style.Unix . should_equal (Delimited_Format.Delimited ',' line_endings=Line_Ending_Style.Unix)
 
         utf_16_le_bom = [-1, -2]
-        group_builder.specify "(in default mode) should detect UTF-16 encoding if BOM is present" <|
+        group_builder.specify "(in default mode) should detect UTF-16 encoding if BOM is present" pending="Encoding.default turned off temporarily" <|
             bytes = utf_16_le_bom + ('a,b\n1,2'.bytes Encoding.utf_16_le)
             f = File.create_temporary_file "delimited-utf-16-bom" ".csv"
             bytes.write_bytes f . should_succeed
@@ -485,7 +485,7 @@ add_specs suite_builder =
             # No hidden BOM in the column name
             table.column_names.first.utf_8 . should_equal [97]
 
-        group_builder.specify "(in default mode) should skip UTF-8 BOM if it was present" <|
+        group_builder.specify "(in default mode) should skip UTF-8 BOM if it was present" pending="Encoding.default turned off temporarily" <|
             utf_8_bom = [-17, -69, -65]
             bytes = utf_8_bom + ('a,b\n1,2'.bytes Encoding.utf_8)
             f = File.create_temporary_file "delimited-utf-8-bom" ".csv"
@@ -523,7 +523,7 @@ add_specs suite_builder =
             r.first_column.to_vector . should_equal ['\uFFFD']
             Problems.expect_only_warning Encoding_Error r
 
-        group_builder.specify "should fall back to Windows-1252 encoding if invalid UTF-8 characters are encountered in Default encoding" <|
+        group_builder.specify "should fall back to Windows-1252 encoding if invalid UTF-8 characters are encountered in Default encoding" pending="Encoding.default turned off temporarily" <|
             f = File.create_temporary_file "delimited-invalid-utf-8" ".csv"
             # On the simple characters all three encodings (ASCII, UTF-8 and Win-1252) agree, so we can use ASCII bytes.
             bytes = ('A,B\n1,y'.bytes Encoding.ascii) + [-1] + ('z\n2,-'.bytes Encoding.ascii)
diff --git a/test/Table_Tests/src/IO/Delimited_Write_Spec.enso b/test/Table_Tests/src/IO/Delimited_Write_Spec.enso
index 855ef66551f6..41424d0470bb 100644
--- a/test/Table_Tests/src/IO/Delimited_Write_Spec.enso
+++ b/test/Table_Tests/src/IO/Delimited_Write_Spec.enso
@@ -569,7 +569,7 @@ add_specs suite_builder =
 
         ## If the Delimited config has Encoding.default, the encoding for read will be determined by BOM and Win-1252 fallback heuristics.
            The same encoding should be used for writing, to ensure that when the resulting file is read, all content is correctly decoded.
-        group_builder.specify "should use the same effective encoding for writing as the one that would be used for reading" <|
+        group_builder.specify "should use the same effective encoding for writing as the one that would be used for reading" pending="Encoding.default turned off temporarily" <|
             f = File.create_temporary_file "append-detect" ".csv"
             Test.with_clue "UTF-16 detected by BOM: " <|
                 bom = [-1, -2]