Views indexing in loop

Hello !

I have an issues with building 4 views inside one design document. It’s indexing in a infinite loop

If you just look the progress percentage, it go to 100% and then go back to 15%.
I have inspect the /tasks result. The totalChanges is already same, around 251 326 257.

I join you some screenshot.

Do you have an idea of what occurs ?

PS : version is 4.0.0-4051 Community Edition (build-4051) on ubuntu 14

What do your map & reduce functions contain?

I found one error in one views by looking map reduce log file