"Click to edit" after migrating from IPB 3.4.x to MyBB 1.8.19

Hi there


I'm freshly user of MyBB after making the decision to switch from IPB and I encountered ONLY one problem that I can not deal with...


My problem concerns mainly to not showing upsome posts on forum.
Most often, these are the first posts in the threads, but it happens also in the answers to.

In post display only "Click to edit" text and after trying to edit it I only get text "Loading..." and nothing more happens.
Of course, I checked the MySQL database and after comparing several posts after conversion, all are saved in the database correctly.

Conversion made with the help of the MyBB Merge System.

At the end a few photos of sample posts and entries.
Before conversion:

  originalpost.jpg (Size: 234.65 KB / Downloads: 6)
After

  posts.jpg (Size: 199.71 KB / Downloads: 5)


Original post in MySQL (MyBB Tables)

  posts mysql.jpg (Size: 162.16 KB / Downloads: 3)


The whole thing started with a clean script without any plugins installed.

Thanks