I went to Bloodtide Coast for the Wurm event and got placed at Overflow while waiting decided to finish my daily gatherer and started to gather ores and vegetables.
Travel to main channel dialog poped up so i clicked travel.
But for my surprise i was placed in another Oveflow.
I realized its different overflow because the gatherables was places in different places in this one.
Around a minute later i got Travel to main poped up again i clicked travel and got moved to 3rd Overflow instead of main channel.
Than i waited again and same thing happened but this time i made screens to provide in this bug report. (check the gatherable items on the minimap which prove those are different Overflow channels)