After changing the exchange rate, the product price automatically displays the discount issue

Hello Villatheme support team,

I like your WooCommerce Multi Currency plugin, but now I have an issue:

As long as the exchange rate of other currencies is less than 1 of the default currency, the price will be automatically discounted after changing the exchange rate on the woocommerce store product page. A horizontal line crosses out a gray price, but no discount price is set for the product. This is the problem. If the exchange rate of other currencies exceeds the default currency 1, there will be no such issue.

Issue video: https://1drv.ms/v/s!AkRadSGNDVqclqoMpBGPR6eYSV2i3A?e=UcnHA0

Other plugins related to WooCommerce have been disabled. Is this a bug?
I look forward to your help, Thank you very much.