Hey,
I hope this is the right place for feedback about the community forum: Really missing "Preview" before submitting a post.
Or at least it is hard to find it ;-)
For me it's on the right side, perhaps you hid it accidentally?
Hit ESC if you have overlays like suggestions for similar topics or welcome messages.
Ah, got the issue )
It becomes hidden by suggestions and I miss the moment when the tips are not there yet )
Just hit ESC to discard the overlays 
Yes-yes, got it :)
Thanks!