Since upgrading to 2.5.1 a number of teachers have hidden courses listed on the front page which they cannot access. Under the available courses it says "You have 2 hidden courses". As admin I cannot identify which these are.
In one case, the course is definitely not hidden. Other teachers can be enrolled and see the course. Even if I unenrol this teacher and re-enrol, she cannot see it. If I creating a new course in the same category, it is also listed as hidden, and if I move the course to another category which contains courses she CAN see, it is still hidden!
It seems as though something has become corrupted.
Any advice gratefully received.