"backup" behavior and corrupted file

[droki]

Zooko Wilcox-O'Hearn:
> 
> We're currently diagnosing a similar issue that a couple of users are
> having with the LeastAuthority.com S4 service. Are you using S4? If
> so, you're another S4 user having this problem, and we could use your
> help investigating it. If not, then this is surprising because I
> thought the bug was in the S4 backend, so if you're having this bug
> *without* using the S4 backend, please let us know!
> 

Is there a ticket for this issue I can follow?  Thanks.