Zend certified PHP/Magento developer

Magento ver 2.4.2 : in checkout payment method cash on delivery payment method, it shows the form to enter the credit card number

This form appears after selecting any payment method for the first time

Even if I click on cash on delivery in the payment method, it shows the form to enter the credit card number. Is this a virus?

And if I reload checkout page, this form automatically goes away

how to solve this problem?

Has anyone encountered this problem?

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