I am running JIRA Core 7.0.10 with JIRA Subversion plugin 3.0.1. There is no Subversion tab in issue details, though there are index files in JIRA_HOME/caches/indexes/plugins/atlassian-subversion-revisions and no error in catalina.out file.
I have tried either stop JIRA with cleaning the folder above, either looking for permissions in permission schemes, as mentioned in question 'Subversion' tab not shown for Agile project issues . No View Development Tools neither View Issue Source Tab is present in permission scheme.
Do anyone know any workaround to overcome it?