We have a JIRA on-premise server instance at version 8.7.1.
Have encountered a problem where the following string "Currently eDEN allows the MA user to be able to issue a composition variation, this should be restricted to AiB and CMA users only." generates a Communications Breakdown error when entered against the Description field.
If I insert a t before only in the string then it will save correctly. I've looked in the log and cannot find an error message that would indicate any more info. It seems like a formatting/special character type issue. Thanks for any suggestions.
have to tried to copy the string to a plain text editor to probably spot if there is a special character which Jira (and/or the database) is troubling with?
Have you also tried to enable SQL debugging, which might be of help tracking this effect further down?
Just in case (and due to further details - as you said even log files do not record anything suspicious) I'd recommend to double check the database server for possible error messages and to double check it's configuration - in first step probably using "Atlassian Troubleshooting and Support Tools" (https://confluence.atlassian.com/support/support-tools-plugin-790796813.html).
Specifically please kindly check if the database is supported and if the collation is a supported one.
All further steps would depend from findings and it is quite hard to tell right now where to start from.