As few of the people have pointed out, LinkedIn is using the iOS clipboard to copy content from it. This practice is deemed as an invasion of privacy, which is being shoved off by LinkedIn by saying that it is a bug. TikTok was also doing the same thing where it was also called out.
After the allegations, LinkedIn has reportedly planned to stop the app from accessing the clipboard. According to the engineering at LinkedIn, they were using the clipboard to copy contents from it for the verification and performing an “equality check” to verify what the user is typing and what was in their clipboard. Erran Berger, the VP engineer at LinkedIn, said that they didn’t store the contents of the clipboard anywhere via his Twitter.
Since the issue was posted online, LinkedIn has responded that they will be fixing this “bug” and will post a follow-up once the issue has been fixed. The iOS 14 rolls out in the fall of 2020.