Strikethrough doesn't work using the markup in the new issue view

Summary

When using markup to add strikethrough on a text, in the new issue view, it doesn't work on this view. If you see the issue in the "old view", the markup works for the strikethrough

Steps to Reproduce

1. Edit an issue using the new view
2. Add a text and use the markup for strikethrough text, dashes (- -);

Expected Results

The text between the markup should be made as strikethrough

Actual Results

Jira shows the dashes and didn't strikethrough the text

Notes

Using the old issue view, the markup works correctly

Workaround

If you using the button to strikethrough the text instead of the markup, the strikethrough works both on the new view and in the old view