We also encounter the problem when attempting to create a credit memo in Magento 2.4.3-p1.
Although the \Magento\Sales\Block\Adminhtml\Order\Creditmemo\Create\Adjustments::formatValue specifies that no currency symbol should be printed (['display' => Zend_Currency::NO_SYMBOL]), the \Magento\Directory\Model\Currency::formatCurrency function does not strip the currency symbol. To strip the currency symbol you could apply the following patch.
--- vendor/magento/module-directory/Model/Currency.php 2021-10-06 14:52:40.000000000 +0200
+++ vendor/magento/module-directory/Model/Currency.php 2021-10-06 14:51:00.000000000 +0200
@@ -431,6 +431,7 @@
if ((array_key_exists(LocaleCurrency::CURRENCY_OPTION_DISPLAY, $options)
&& $options[LocaleCurrency::CURRENCY_OPTION_DISPLAY] === \Magento\Framework\Currency::NO_SYMBOL)) {
$formattedCurrency = str_replace(' ', '', $formattedCurrency);
+ $formattedCurrency = str_replace($this->getCurrencySymbol(), '', $formattedCurrency);
}
return preg_replace('/^\s+|\s+$/u', '', $formattedCurrency);
Note: It is never best practice to edit core files. To apply this patch you should override the \Magento\Directory\Model\Currency class by a new preference, because the function \Magento\Directory\Model\Currency::formatCurrency is private. Alternatively, you can apply the patch using composer in the "scripts.post-install-cmd" (assuming that the patch is stored in patches/vendor-magento-module-directory-Model-Currency.patch):
composer.json
"scripts": {
"post-install-cmd": [
...
"patch --forward --dry-run vendor/magento/module-directory/Model/Currency.php patches/vendor-magento-module-directory-Model-Currency.patch > /dev/null && patch --forward vendor/magento/module-directory/Model/Currency.php patches/vendor-magento-module-directory-Model-Currency.patch > /dev/null || echo \"\\033[1;34m skipping patch \\033[0m\"",
...
]
}
