Ash here from the Shopify team. Welcome to the Shopify Community!
The issue you're describing sounds quite odd, and I can absolutely see how this would be a problem. I'm happy to help dig in and try to figure out what's going on here. In order to assist, I'll first need to get a better idea of what the problem looks like. Could you please reply back here with a link to your online store? I'll do some tests on my end to see if I can replicate the issue.
Could you please also let me know the following:
I look forward to hearing back so we can work together towards a resolution.