Mute original audio for interpretation only works on one language.

Hi, While in a zoom meeting thats being interpreted into both French and Spanish, I'm only able to mute the original audio on the french interpretation. No matter what I do the Spanish interpretation includes the original also. Did I miss a setting in the backend while enabling interpretation. Any advice is welcome.

I'd like to add the mute and unmute original audio for the language in question is showing its being muted however is not taking effect.