[CKEditor5] superscript gets casted to subscript

[ErikDohmen]

Description

We add a superscript formula in the editor through the plugin and then it gets shown correctly, but once we reload the code (or do a setData) it gets converted to a subscript formula

Environment

wiris/mathtype-ckeditor5: 8.10.0

What is the relevant software and their versions?

• ckeditor/ckeditor5-core: 42.0.0

Steps to reproduce

1. Create a formula with a left-superscript formula
2. insert the formula into the editor
3. as per your own website https://demo.wiris.com/integrations/ckeditor/ copy the generated html
4. insert the data back into the editor through the console in my case editor.setData('

   ${}^{a}b=abc$

   ');
5. see that in the editor you get an a with a left subscript instead of a left superscript

Expected result

the same as generated at first a left superscript

Actual result

a left subscript

Other details

Both in our environment as well as on the demo on your site