"problematic figure" is a correct and usable phrase in written English.
It is typically used to refer to someone who has a great deal of influence and control but often causes problems with their actions or decisions. For example, "Many people are unhappy with the decisions of the problematic figure at the head of the government."
François Hollande is Cameron's most problematic figure.
J. T. looms as a towering, problematic figure.
His expulsion by the orthodox church makes him a problematic figure for the current regime.
Meanwhile, Livni herself had proved a problematic figure for some more moderate voters.
Though Mr. Sun's outspokenness makes him a problematic figure, they say China's leaders could still embrace his model to address endemic poverty.
When a politically problematic figure disappears or is disappeared in China, a dark uneasiness falls, though usually accompanied by a glum sense of the inevitable.
Not every video is a reflection on international politics or historically problematic figures.
Maybe it's an effort to quash problematic figures on the rise, like a game of Whac-A-Mole based on perceived insensitivity.
One problematic image is figure 1f in the research article, which appears unnaturally distorted to some critics.
For example, a search for deuterated ammonium in ChemSpider reveals a problematic result: Figure 2(a) shows the result when it is discovered using the ChemSpider Mobile app [30], which acquires the structure via the public API [31], which delivers a structure representation that lacks the isotope information for the 4 deuterium atoms.
Some proponents of the plan thought that gaining Algerian cooperation on counterterrorism might be problematic but figured the Algerians might come around if the United States was prepared to present a detailed proposal to share information.
