Default index.html not working with PHP-FPM

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The Basic-Index-Directoryfiles will not loaded on PHP-FPM!
If you have set PHP-FPM as your default PHP Language, all index.htm or index.html files will not automatically loaded from a directory. You have to set the default Indexdirectory manually on plesk. This is really bad!
You should do a fix, which will set the indexdirectory correctly, also when you activate PHP-FPM or any other PHP version.