Just to reiterate and clarify the problem.
Previously when entering the the embed code into the html tab
and switching back to the visual tab we would have seen this
so we could use our cursor on the red outline to reshape it to the dimensions of our whim.
but now when switching to the visual tab we see the actual youtube video embedded with no way of altering its dimensions
and yeah switching back and forth between html and visual tab does make us go a little mad well me atleast!