In the page https://openstax.org/details/books/calculus-volume-3?Instructor%20resources there is a section Canvas Course CartridgeThis course cartridge, created by the California Community Colleges...

After logging into regular Canvas server it works like a charm.I think your help may help others.Sandor

What happened to this? It became absolutely unusable. Previously when I typed the latex I saw it and could check the correctness of it, and to modify if it was necessary.

The possible solution of the problem is correctly setting the value of Mastery in Question Banks-> Quiz-> Aligned Outcomes.

Thanks. In my original question I had made an update where I described the possible solution.At least, after making that it works well.

@ezaurova  Yes, it works well. I like this community, because if there is a problem they solve it (or at least try to find some solution). ❤️

Yes, I have the same practice. If there is no better method then I use this little bit strange behavior.

After turning on the button 'Directly Edit Latex', I type  \alpha  in the textbox,  and \(\alpha\) appears below the button. Nothing else. Not  the greek alpha. I tried in Chrome, Firefox, Edg...

What happened to this? It became absolutely unusable. Previously when I typed the latex I saw it and could check the correctness of it, and to modify if it was necessary.

The possible solution of the problem is correctly setting the value of Mastery in Question Banks-> Quiz-> Aligned Outcomes.