Expand notation is incorrect

[Jensku-creator]

As you see ⬆️ , current notation used for expanding fractions is incorrect.
Current latex code for this (button) is:
^{2\text{)}}\frac{2}{3}

I suggest there should be used this (for example):
{{^{2\text{)}} }\atop}! \frac{2}{3}

Then notation would look as it should be (picture ⬆️ ). This notation can already be used in editor (as I did), but if used the user gets warning -text and preview is not working.

Any other way to get correct notation would be also great.

Currently student (not knowing latex) cannot use correct notation and the incorrect notation creates problems for students. When the notation method is correct in the study materials editor, but incorrect in the matriculation exam, it causes confusion in the matriculation exam. If, on the other hand, study material uses the same editor and same incorrect notation as matriculation exam, it is even bigger problem. Thats why I hope this can be fixed as soon as possible.

Thank you! 😸