Markbook auto selecting a specific class

Hi, Im facing a strange problem on markbook section. A teacher is taking 2 classes, But when trying to edit markbook, its automatically selecting a specific one.

Short 1 shows that im teacher is taking 2 classes. English class 1 and English class 2, When im selecting markbook for english class 2 through edit markbook, its automatically selecting class 1. Am i the only one who is facing it? Is there any way to solve it?
Please let me know.

Topon, it does seem that this is a bug in v12, which we had not registered up until now. I am including @skuipers here, as she rewrote some of this code, and will hopefully be able to get a fix for us (I am still on the road, and not in a position to address this one just now).

Sandra, any chance you can take a look at this and see if you can find a fix for the homepage link to the markbook?



Thank You

Topon, I have now returned from holiday, and have had another look at this, and it seems that I cannot recreate the issue any more. I am using a different computer, so I guess it might be a browser/OS issue. Just now I tested on the latest Firefox and Chrome on Mac OS 10.11.5, and it worked fine. Can you let me know what browser and OS you are using? Thanks,