src/ReadonlyTagField.php

@@ -27,8 +27,7 @@ class ReadonlyTagField extends TagField
     {
         $options = array();
 
-        // only get the selected options
-        foreach ($this->getOptions(true) as $option) {
+        foreach ($this->getOptions()->filter('Selected', true) as $option) {
             $options[] = $option->Title;
         }
 

tests/TagFieldTest.php

@@ -408,22 +408,6 @@ class TagFieldTest extends SapphireTest
         $field->setTitleField('Name');
         $readOnlyField = $field->performReadonlyTransformation();
         $this->assertEquals('Name', $readOnlyField->getTitleField());
-
-        // Also check Field options
-        $field = new TagField('Tags', '', TagFieldTestBlogTag::get());
-        $field->setTitleField('Title');
-        $field->setValue(['Tag1']);
-
-        // When not read only (and not lazy-loading) all source options are returned
-        $htmlText = $field->Field();
-        $this->assertStringContainsString('Tag1', $htmlText);
-        $this->assertStringContainsString('222', $htmlText);
-
-        // When read only mode, only selected options are returned
-        $readOnlyField = $field->performReadonlyTransformation();
-        $htmlText = $readOnlyField->Field();
-        $this->assertStringContainsString('Tag1', $htmlText);
-        $this->assertStringNotContainsString('222', $htmlText);
     }
 
     public function testItDisplaysWithSelectedValuesFromDataList()