Accidental Glitch on DOOM 2016 via XBox One

Ok, so as I was playing #DOOM while watching Makas Guide video on locating all the secrets on this level, Mission 6: Kadingir Sanctum. I opened the Blue Gate after obtaining the Blue Skull for it. As soon as I go through the gate, the battle wave began & then noticed from Makas video that there was a secret location that I had to go to before going through the Blue Gate. So I go back to the Blue Gate to find the secret location in which the entrance is located on the top right hand side of the gate as you’re facing towards it, the secret location leads to one of the Rune Trials. As soon as I completed the Rune Trial, I go back to the Blue Gate & I go back through it I find these three Lost Souls floating in midair without even moving. I must’ve caused some kind of accidental glitch during the process.....🤔🤔🤔🤔🤔