Party list in Quotation is not populating

Hi all.

The party list (drop down list) in quotation list is not populating time to time. Sometimes the search function returns the customer names starting with a specific letter (which we searched just before the issue). It works when we reload the page. And after few search, the issue returns.

This seems to be fine with all other docs.

Is this a bug or do we have a work around for this?

ERPNext: v12.4.2 (version-12)
Frappe Framework: v12.2.1 (version-12)