Fix returning empty text in some cases #573

Job	Run time
PHPUnit Composer v2 (PHP 7.4)	33s
Tests alternative autoloader (PHP 7.1)	10s
PHPUnit (PHP 7.2)	54s
Tests alternative autoloader (PHP 7.2)	7s
PHPUnit coverage (PHP 7.4)	58s
PHPUnit (PHP 7.3)	27s
Tests alternative autoloader (PHP 7.3)	10s
PHPUnit (PHP 7.1)	42s
PHPUnit (PHP 7.4)	31s
PHPUnit (PHP 8.0)	26s
Tests alternative autoloader (PHP 7.4)	11s
PHPUnit (PHP 8.1)	28s
Tests alternative autoloader (PHP 8.0)	8s
Tests alternative autoloader (PHP 8.1)	20s
PHPUnit (PHP 8.2)	44s
PHPUnit lowest deps (PHP 7.3)	27s
Tests alternative autoloader (PHP 8.2)	9s
PHPUnit (PHP 8.3)	31s
Tests alternative autoloader (PHP 8.3)	6s
Windows-Tests with PHP 7.1	1m 13s
Windows-Tests with PHP 7.2	1m 4s
Windows-Tests with PHP 7.3	1m 0s
Windows-Tests with PHP 7.4	54s
Windows-Tests with PHP 8.0	57s
Windows-Tests with PHP 8.1	58s
Windows-Tests with PHP 8.2	54s
Windows-Tests with PHP 8.3	2m 29s
	17m 31s

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