Some tinyMCE plugins do not work in the comment field

[srobotta]

Moodle Version in use

Moodle 5.1.4

** Plugin Version **

PDF Annotator v1.5 release 9

Describe the bug

Several tinyMCE plugins do not work when the tiny is loaded in the comment section to add an annotation. I have a detailed description for the Course Elements Plugin provided: bycs-lp/moodle-tiny_elements#55

When I use the pin tool, I cannot use the "insert code sample" from the tinyMCE. The first time it seems to work but no code is inserted, the second time I try to use the insert code sample, as soon as I try to write some code, the modal automatically closes without having a chance to edit further.

What all these bugs have in common is that apparently the event listener do not work correctly.

To Reproduce
Steps to reproduce the behavior:

1. Given there is a pdf annotation activity and I open it.
2. I click on the pin icon in the tool bar of the pdf annotator.
3. I clock somewhere in the PDF to add a pin with a comment.
4. In the tinyMCE I click the menü item insert -> code sample.
5. I add some code and click save so that the modal closes.
6. I click "Create annotation"
7. I click at another place in the PDF and repeat the steps to add a maker with an annotation.
8. I cannot reliably add another code sample.
   Expected behavior
   A clear and concise description of what you expected to happen.

Desktop (please complete the following information):

• OS: Linux Fedora 43
• Browser: Firefox
• Version: 149.0.2

Additional context

The bug is not always reliable reproducable. Inserting code usually works at the first time but not afterwards. It might work in a separate answer to a comment. However, from a user perspective, it does not exactly what it should.