could you please double check by using Jira Admin Helper (Permission Helper) if one of the troubling issues is indeed still available for your user?
I am trying to figure out if something related to permissions was changed what would not explain why you are still able to search for issues but not open them - but it could be worth to double check anyway.
Also, when this will show nothing useful I am wondering if you are able to spot anything suspicious from atlassian-jira.log - hopefully an error message that brings light into this is logged?
Hey there Cloud Community members! We’re excited to give you the first glimpse of the new home for business teams on Jira — Jira Work Management. Jira Work Management is the next generation of J...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event