Very interesting bug involving dictate and Safari.

macOS & Mac Apps

hey all,
Since using Mojave, I have noticed a very interesting bug involving dictate and Safari.
If I dictate something into a search field or in any field whatsoever, it will put what I say twice.
For example, if I say this new macbook is great, dictate will do this, this new macbook is greatthis new macbook is great.
I have tried resetting dictate, no result, reformatting the system, no result, i’m now on a new macbook, you guessed it, same thing keeps happening.
I have to dictate into text edit for things such as Facebook posts or it just makes a mess of it.
Has anyone else come across this?

thanks so much