Illustrator bug, it splits my paragraphs into several blocks

[LPO PACA]

Illustrator bug, it splits my paragraphs into several blocks. It creates a block per line and per style (bold for example). Do you have a solution to fix this bug? 

Thanks

[Anna Lander]

Show please a screenshot with the text blocks selected.
Is your file AI or PDF?
Does it happen during creating text in your current working file or in a re-opened PDF?

[LPO PACA]

Here is a screenshot. The text is divided into many layers. This is an .ai file created on Illustrator. My version of Illustrator is 25.2.3.

Thanks

[Anna Lander]

Is it your working file from scratch or it was received from someone else?

[LPO PACA]

Is it my working file from scratch.

[Monika Gause]

Can you please tell us the steps of what happened?

You created the file and then created all these layers and the text. And then saved the file (exactly where?). And then closed and then this happened? Or does it happen while you work?

[Anna Lander]

Could you try to create a new text and fix the moment when it becomes splitting and then share a screenshot of this moment? Such tool behavior is very strange for AI files, let's try to find the cause together.