Just saw this while switching vaults from /Users/valerykondakoff/Documents/Obsidian to /Users/valerykondakoff/Dropbox/Obsidian:
/Users/valerykondakoff/Documents/Obsidian
/Users/valerykondakoff/Dropbox/Obsidian
Looks, like there might be a loop somewhere…
If this happens again in 0.6.5 and you can tell us how to reproduce it, let us know!