Price field $ is growing on its own to $$$

I’m helping a non-profit with their membership form. It uses a simple product field in which the membership price is set at $50. They’ve been using this form for at least three years with no issues. But now (as of 4/10/19) the form, when displayed, shows insane prices, like $2,381, for example. The form looks fine in edit mode but in preview or live display the price is some huge wacky number. I looked back at some of their old ticket pricing forms from 2016 and those have all gone wacky too, when looked at in preview. Any ideas of what might be changing the numbers in the price field? It’s a mystery beyond my volunteer pay grade. Thanks for any help you can provide.

I would recommend opening a support ticket for that. I don’t think it can be resolved in the community forums.