Parking calls

What am I missing with the latest parking and core modules in FreePBX17? In our setups using feature codes or restapps we have an issue: if they are updated to the latest (core at 17.0.18.52 and parking at 17.0.2.9), then I can park a call but do not get the announcement for which slot the call was parked in. After testing various revisions of both modules, the most reliable solution is to keep the core at 17.0.18.49 for now. Am I missing some other setting that might be causing our issue?