Grade Book Student Detail appears blank for random students.

[stanisshap]

Grade Book Student Detail appears blank for a few random students.
One student had this issue for about a day, and it "went away" by itself.
Other student reported the problem today, so it also might "disappear" tomorrow.

I could not find anything "different" about the student accounts with broken gradebook compared to all the others that have the gradebook working.

Error reporting is set to "error_reporting(E_ALL & ~E_NOTICE);" but no errors are displayed.

Logging in and out, different browsers, different devices all tried but nothing helped.
Any help is appreciated!

[drlippman]

I'd recommend checking your servers PHP error log. Some errors don't seem to get displayed.