Auto save in a Mac is a Macs system feature, not a TurboTax feature. Check to see if it is turned off in system preferences.
http://osxdaily.com/2012/08/22/turn-off-auto-save-os-x/
File locking is also a Max System feature. TurboTax cannot lock a file.
Locking a file Apple article.
https://support.apple.com/guide/mac-help/lock-a-document-on-mac-mchlp1342/mac
The problem that you describe would seem to be a local issue on your Mac.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
