Bucket spigot air bubble

[DarthMalt]

One of the last times I was bottling, I noticed some air bubbles flowing down the bottle filler and into the beer. They weren't the occasional tiny bubbles I've seen that were always assumed to be CO2: these were a bit larger and, when I stopped filling, flowed back up through the spigot and into the beer.

A couple days ago I was bottling another batch and I noticed the bubbles again. This time, it was at the beginning of bottling and I decided to nip it in the bud. Wondering if there was air somehow trapped in my spigot, I turned it around (upside down) and noticed a significant amount of air suddenly rise from the back of the spigot, through the beer in the bucket. I carefully turned the spigot back down and didn't have any other problems with bubbles for the whole bottling session.

What gives? Has anyone else had this issue and how do I go about correcting it? I've bottled many successful batches and only recently started noticing this. I'm wondering if an air pocket is forming in the spigot as I'm racking?

 

[DarthMalt]

Wow, no one has had this problem? Somehow I find it hard to believe I'm the only one...

 

[kh54s10]

Unless you have a leak that is continually sucking in new air and a lot of it don't worry about that. It is not enough to make any difference to your beer.

I always have a little bubbling when bottling and never have any oxidation problems.