Why Do Pedals After My 105B Drive the Input of the 105B?

Sorry about the confusing title.

This is my first post here and I’m researching a curious interaction with an oldish 105B Bass MuRF.

I tried to search the MF subforum and couldn’t find what I was looking for.

Essentially I’m getting pedals that are down the chain from the MuRF to drive the input of the MuRF. This is kinda counter intuitive to me. I’m not complaining because it allows me some neat interactions.

So In sussing out what is causing this (and then not fixing it) I figured I post a pic of my pedalboard. And layout my signal chain.

Blarp:

The signal chain is: BOSS TU-2–>BOSS OC-2–>Earthbound Audio Supercollider–>Source Audio Mulitwave Bass Distortion Pro–>Source Audio Bass Envelope Filter–>105BOhnoho’s Utter Stutter–>Drasp Modded Line 6 DL4–>FEAlabs OptiFET.

The Utter Stutter is a feedback loop that has a Dwarfcraft Devices Shiva and an Ohnoho’s BLOWING UP in it.

I’m wondering if this could be caused by a powering issue (obviously running the factory wall wart). Maybe because the next pedal in the chain is a feedback loop (note that the MuRF is connected to the input of the Utter Stutter,..but not in the actual loop.

What sorcery is this.