Index: src/wp-admin/includes/class-wp-ms-themes-list-table.php
===================================================================
--- src/wp-admin/includes/class-wp-ms-themes-list-table.php	(revision 32685)
+++ src/wp-admin/includes/class-wp-ms-themes-list-table.php	(working copy)
@@ -245,14 +245,14 @@
 	}
 
 	/**
-	 * Get the name of the default primary column.
+	 * Get the name of the primary column.
 	 *
 	 * @since 4.3.0
 	 * @access protected
 	 *
-	 * @return string Name of the default primary column name, in this case, 'name'.
+	 * @return string Unalterable name of the primary column name, in this case, 'name'.
 	 */
-	protected function get_default_primary_column_name() {
+	protected function get_primary_column_name() {
 		return 'name';
 	}
 
@@ -438,19 +438,24 @@
 			if ( in_array( $column_name, $hidden ) )
 				$style = ' style="display:none;"';
 
+			$extra_class = '';
+			if ( $primary === $column_name ) {
+				$extra_class = ' column-primary';
+			}
+
 			switch ( $column_name ) {
 				case 'cb':
 					echo "<th scope='row' class='check-column'>$checkbox</th>";
 					break;
 				case 'name':
-					echo "<td class='theme-title'$style><strong>" . $theme->display('Name') . "</strong>";
+					echo "<td class='theme-title{$extra_class}'$style><strong>" . $theme->display('Name') . "</strong>";
 					if ( $primary === $column_name ) {
 						echo $this->row_actions($actions, true);
 					}
 					echo "</td>";
 					break;
 				case 'description':
-					echo "<td class='column-description desc'$style>";
+					echo "<td class='column-description desc{$extra_class}'$style>";
 					if ( $theme->errors() ) {
 						$pre = $status == 'broken' ? __( 'Broken Theme:' ) . ' ' : '';
 						echo '<p><strong class="attention">' . $pre . $theme->errors()->get_error_message() . '</strong></p>';
@@ -492,7 +497,7 @@
 					break;
 
 				default:
-					echo "<td class='$column_name column-$column_name'$style>";
+					echo "<td class='$column_name column-$column_name{$extra_class}'$style>";
 
 					/**
 					 * Fires inside each custom column of the Multisite themes list table.
Index: src/wp-admin/includes/class-wp-plugins-list-table.php
===================================================================
--- src/wp-admin/includes/class-wp-plugins-list-table.php	(revision 32685)
+++ src/wp-admin/includes/class-wp-plugins-list-table.php	(working copy)
@@ -581,7 +581,7 @@
 
 		list( $columns, $hidden, $sortable, $primary ) = $this->get_column_info();
 
-		$extra_class = ' has-row-actions column-primary';
+		$extra_class = ' column-primary';
 
 		foreach ( $columns as $column_name => $column_display_name ) {
 			$style = '';
@@ -719,14 +719,14 @@
 	}
 
 	/**
-	 * Get the name of default primary column for this specific list table.
+	 * Get the name of primary column for this specific list table.
 	 *
 	 * @since 4.3.0
 	 * @access protected
 	 *
-	 * @return string Name for the default primary column, in this case, 'plugin'.
+	 * @return string Unalterable name for the primary column, in this case, 'plugin'.
 	 */
-	protected function get_default_primary_column_name() {
+	protected function get_primary_column_name() {
 		return 'plugin';
 	}
 }