Start using the file contents for calculating the hash again instead of the modified timestamp.

hostep · hostep · commit 507cd4208b18 · 2017-07-31T22:57:39.000+02:00
diff --git a/app/code/Magento/Translation/Model/FileManager.php b/app/code/Magento/Translation/Model/FileManager.php
@@ -110,6 +110,6 @@ public function updateTranslationFileContent($content)
      */
     public function getTranslationFileVersion()
     {
-        return sha1($this->getTranslationFileTimestamp() . $this->getTranslationFilePath());
+        return sha1(sha1_file($this->getTranslationFileFullPath()) . $this->getTranslationFilePath());
     }
 }

Original file line number	Diff line number	Diff line change
`@@ -110,6 +110,6 @@ public function updateTranslationFileContent($content)`
`110`	`110`	`*/`
`111`	`111`	`public function getTranslationFileVersion()`
`112`	`112`	`{`
`113`		`- return sha1($this->getTranslationFileTimestamp() . $this->getTranslationFilePath());`
	`113`	`+ return sha1(sha1_file($this->getTranslationFileFullPath()) . $this->getTranslationFilePath());`
`114`	`114`	`}`
`115`	`115`	`}`