[Teak] Course overview editor breaks typing order and resets cursor to start

[eemaanamir]

Description:

In the Teak release of frontend-app-authoring, the Course Overview description editor is not functioning correctly.

Issue details:

• When typing or editing the course description, characters appear in the wrong order on the first line.
• The cursor focus keeps changing.
• After placing the cursor in the editor and typing, it jumps to the beginning of the text.
• Any new input is inserted at the start instead of the intended cursor position.

This makes it impossible to properly edit the course description.

[bradenmacdonald]

This bug was fixed in #2599 and has been backported to Ulmo, but I guess not to Teak. You should be able to cherry-pick that fix onto your Teak branch, or perhaps we should consider backporting it to Teak as well.