The phrase 'discovered an issue' is correct and usable in written English.
You can use it when you want to express the idea of someone finding a problem or challenge. For example: The IT team discovered an issue with the company's network security.
Nevertheless, we discovered an issue related to the programmer pins with the help of David Ackerman and Jon Amazon.
In the prison library at Alcatraz, Mr. Sobell discovered an issue of Scientific American with an article about Robert Stroud, a convicted murderer who was being kept in isolation there.
Also, it is possible that a developer discovered an issue and started writing a patch even before reporting it on Bugzilla.
When Face ID debuted last year, I soon discovered an issue where it had major problems recognizing my face despite having my face registered with the iPhone X.
But she has discovered an issue that clearly strikes a chord.
That could be when the foreclosure occurred or when a borrower discovered an issue with the transfer of title.
If Staples discovers an issue, it is important to note that customers are not responsible for any fraudulent activity on their credit cards that is reported on a timely basis.
But in the rush to approve her, McCain's savvy advisers apparently didn't use the Google on the Interweb to discover an issue that undercuts her anti-corruption credentials: She's facing that tawdry scandal, now under investigation by the state legislature, involving an effort to sack the state's top cop.
When Elijah ventures outdoors and removes the gift wrap, his world is changed as he discovers a issue of "Active Comics"—the beginning of an obsession.
Among their conclusions they discovered "a number of key issues occurred, which may have contributed to the accident, though none alone caused it".
"We recently discovered a manufacturing issue affecting a very limited number of iPhone 5S devices that could cause the battery to take longer to charge or result in reduced battery life," said Teresa Brewer, an Apple spokeswoman.
