v3 client auth: No interned sandbox parameter found

Setting ClientOnionAuthDir /var/lib/tor/client_auth in combination with Sandbox 1 leads to this error:

Oct 19 22:32:15 host tor[18554]: Oct 19 22:32:15.000 [warn] sandbox_intern_string(): Bug: No interned sandbox parameter found for /var/lib/tor/client_auth (on Tor 0.3.5.3-alpha )
Oct 19 22:32:15 host tor[18554]: Oct 19 22:32:15.000 [warn] Directory /var/lib/tor/client_auth cannot be read: Permission denied

When Sandbox is set the 0, the everything works just fine.

Trac:
Username: pege

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