Embed/HTML code disappearing

well I mean even something very simple will change.
Example:
Test
<center><img src=”https://image&#8221; title=”test”></center>
Testingggg

Will change after saving as draft to:
Test
<img src=”https://image”&gt;
Testingggg

This happens only for the Author, I have not seen it happening to Editor or Administrator.

I figured out what why it didn’t work. So apparently WP changed its Role capabilities, taking away the Authors control to post “unfiltered_html”.
There are two ways to change that. One is manually per SQL:
https://forum.corephp.com/index.php?topic=1066.msg2618

Or you can download a Plugin for WP that lets you customize your Role Capabilities. I recommend this one here, even thought it says supports 2.6, I just installed it on 2.9.2 and it works great ??
https://sourceforge.net/projects/role-manager/

Good luck everyone.