Domain_sessionidx is 0 for a lot of visitors

Hi folks – wondering if anyone’s run into something like this before. For our JavaScript applications, we’re noticing a significant percentage of events for which the domain_sessionidx is 0. Theoretically, this should never happen. Any ideas?

Yes - this shouldn’t really be happening unless something is amiss with cookie setting (and even if cookies are disabled it should be getting set to 1). Is the traffic coming from a certain user agent / collection of bots?