Index: src/wp-admin/includes/update-core.php
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- src/wp-admin/includes/update-core.php	(revision 37301)
+++ src/wp-admin/includes/update-core.php	(revision )
@@ -900,6 +900,8 @@
 					continue;
 				if ( ! file_exists( $working_dir_local . $file ) )
 					continue;
+				if ( '.' === dirname( $file ) && in_array( pathinfo( $file, PATHINFO_EXTENSION ), array( 'html', 'txt' ) ) )
+					continue;
 				if ( md5_file( ABSPATH . $file ) === $checksum )
 					$skip[] = $file;
 				else