YES that is exactly what happens to me !!
It is a bit frustrating because I end up refreshing the page, then posting again and again, then not knowing if my post actually made it or not, or even if it was posted multiple times
I will try clicking on back after this post like you said and see, maybe that will help me

I suggest, instead of a white blank page, one that says your post has been added or sent

Regards
Noha