Weird issue with MAX_LISTENERS constant

I did post earlier but my post was disabled by the bot (why?)
I couldn’t make Fmod to work in my project, I add an error: [FMOD] Max number of listeners reached: 8

I tested the integration in a brand new project without any issue.

So I changed the constant (MAX_LISTENERS in fmod.cs) value to 100 and it worked in my project. I reverted back the constant to 8 and it still work!

I wonder what could have caused this issue and if I should worry about it?
Unity 2020.2.3f1, Fmod 2.01.05