just a suggestion: There are a lot of issues (e.g. #23389) having restricted access (accessible only by OCCT members). I think it would still be good to make them visible for all on the issue list in Mantis - this gives a better overview on the current work / roadmap even if the details are not accessible.
Further, if possible I would opt for making all the issues viewable by everyone and restrict the access to customer / sensitive data (if existing) only. The reason is that as external developer I might still want to give feedback on the issue (like the problem with #23272 - by the way, why is this issue actually marked as restricted? Was this intended? It seems rather to be related to the tests and not to a customer issue??)