"consider problematic" is correct and can be used in written English.
For example, "The consequences of unchecked industrial waste pollution can be considered problematic and should be addressed."
Russia will have an optional on-ice session that the union does not consider problematic.
On the other hand, regardless of the healthiness of Subway's offerings, they are still being directly marketed to children, a strategy many parents consider problematic.
The first, sent by Omar to Zahid, warned that "difficult times may lie ahead" for his family and to "get rid of any material you may consider problematic".
By ignoring the fact that international trade sometimes – certainly not always – involves redistributive outcomes that we would consider problematic at home, they fail to engage the public debate properly.
Because the Neck Disability Index is not a condition-specific measure of neck function, initial Confirmatory Factor Analysis should consider problematic neck patients as a homogenous group.
We did not also consider problematic an infit mean square between 1.5 and 2.0, because the item or person is "unproductive for construction of measurement, but not degrading" (Linacre 2013, p. 266).
Both approaches are considered problematic and potentially explosive by peace advocates.
Over-recruitment and English language monitoring were considered problematic this year, for example (pdf).
The 1,600 units in East Jerusalem constituted the latest of several steps that the Americans considered problematic.
Last year, the women had been prompted to list their five favorite books, or other pieces of "intellectual media," which many of the women considered problematic.
It is a neighborhood that even five years ago was considered problematic for residential development, primarily because the sprawling Cabrini-Green public housing project is across the street.
