I recently picked up the Silver Flash blunderbuss, and I've noticed that if I target an enemy near my party members, it hits them as well with the blind effect. They do not seem to take damage, but they play the "stop hurting your allies" sound, and they display the blind on their character sheet. In practice, this means that at least one of my melee fighters is constantly being blinded by my cipher if I have her using the gun.

 

I doubt this is intended, so it seems like the kind of thing that would be a bug.

 

Can confirm this happening.

Devs reported  this is  intended effect.

 

https://forums.obsidian.net/topic/85025-wm2-silver-flash-blunderbuss-blind-effect/?hl=%2Bsilver+%2Bflash