The only reason I feel like it's not normal is because I have three friends with (older) 870s and none of theirs do it.
It's not that big of a deal, but I wanted to see if that's common. The only time it causes any sort of issue is if the shotgun is completely empty and I hold it up to load it, more often than not, the forend is not all the way forward and the magazine tube won't take the shell. So then I have to move my hand back to the forend, push the forend forward, and come back to load it, which is just kind of annoying.
Remington support just recommended I ship it in for inspection. But I don't want to waste my time and money if it's something that's normal on these guns.