It stays like this, what's the solution?

If the other suggestions don't work

Reinstalling rarely fixes everything - you can do a complete reinstall using the
Creative Cloud Cleaner Tool https://helpx.adobe.com/creative-cloud/kb/cc-cleaner-tool-installation-problems.html

@muqtrei

Is it a fresh install - or upgrade / update?

Try resetting preferences first: 

https://community.adobe.com/t5/indesign-discussions/reset-indesign-preferences-and-other-troubleshooting/td-p/11990234

What OS do you have?

How much RAM?