Extension Issue

PBX Firmware: 10.13.66-4
PBX Service Pack:

Anytime I enable voicemail on any extension it automatically deletes that extensions secret. I can not add/change/edit the secret until I disable voicemail. I have disabled voicemail on all extensions, verified the voicemail.conf file is clean. Has anyone else experienced this issue or should I complete a bug ticket?

Thanks for your time and assistance

Please give us way more details about this. Like device type for starters.