I have a Read-Only custom field with value there, but its's value doesn't present at the view screen, I am pretty sure it is presented before, just suddenly disappear from one day. (the problem is observed on all tickets in our jira).
I use a python script to retrieve all data for one ticket, and make sure the value of that field is there, no loss.
I check the field config, see there is "Remote ID Search" is set as search template, I don't know what is it and where I can find the detail of "Remote ID Search".
This filed value is with a hyper link, no idea it is caused by the url link, for example the website is not accessible now.
I have tried with Admin helper, and make sure config is well, no mistake.