Automatically deleted tabs

I’m using html in the contents of the tabs, and when I insert a table into one of the tabs and refresh the page, all tabs are deleted next to the content.

I had to work hard to insert all that content again, and the problem persists, and it really disturbs me.

This bug is negatively affecting my productivity, I hope they can solve the problem.

I use the latest version of the plugin and wordpress.
However, this problem occurred in earlier versions.

I removed other plugins to identify a possible conflict, however, I was not successful, since other plugins did not impact the operation of this one.

Please solve this problem.