'ostensible issue' is a correct and usable part of a sentence in written English.
You use it to refer to the issue that appears to be true, but which may not actually be accurate or true. For example, "The ostensible issue was a lack of resources, but upon further investigation, it became clear there was a misallocation of funds."
These conditions attracted decision errors, pressures, and other ostensible issues which led to deliberate and unintended violations.
He has been popular, too, because of his tough line on "security" issues, meaning questions of crime and public safety — his willingness to expel illegal-immigrant Roma was the ostensible subject of our interview last fall.
Introducing Beckett's later novels in a new Grove edition of the writer's work issued to mark his centenary this year, Salman Rushdie takes the opposite — or, life being what it is, perhaps the identical — view: "These books, whose ostensible subject is death, are in fact books about life".
These poems subsume their ostensible subject into a philosophical meditation on the decay of the world.
At times that research took him far afield of his ostensible subject.
And moments before he opened fire, Mateen posted four updates on Facebook about his ostensible political agenda, issuing threats and demands similar to those he later made to the emergency 911 operator.
Many Southern officials and citizens -- both white and black -- now function in working alliances and normal operations along ostensible lines of conventional issues.
In Bickham's opinion, the war continued after the evaporation of its ostensible causes because a larger issue was at stake: "whether or not the United States would be respected as a sovereign nation".
Horney in particular argued for an inherent feminine disposition that is not merely a secondary formation premised on castration and she took issue with the ostensible effects of penis envy and women's supposed feelings of inferiority.
