Hello Upwork team,
i saw a major bug on transaction history page of Freelancers type account.
whenever i try to hit "Ref id" it display popup of transaction detail but there is no way to get out of popup except reloading the page.
i don't see it a valid thing.
Lead Designer,Developer, SEO and Software Testing Expert.
Thank you for reporting this issue. I have forwarded your report to the team for further investigation.
Sorry about the inconvenience.
Edited to add: You should be able to close the pop up window by pressing ESC on your keyboard.