Hello,
That's strange, cause it works fine for me on V10.0.1.

From your image, it looks like your elements are not related to each other.
Just to be sure, did you set a parent activity for your elements ? How does your Work Breakdown Structure (wbs) look like in Activities screen ? It should reflect your hierarchy.
See example below :

Hi Plucks. Thanks for your answer.

Yes. The parents are set.

This is the Activities screeen with the wbs

Hello,
Did you try to recalculate your planning using the calculator icon ?

Because, from your screen, I can see the blue circle inside your project icon (which means it needs to recalculate).

Hi.
Yes. But it didn't solve the issue

Strange...
I cannot reproduce such issue.
Can you check that on Demo ( https://demo.projeqtor.org) you get a correct display ?
Then on your instance, please go to admin page and run "Consistency check", if some issues are pointed out, please run "fix".

I have the same issue.

In my case: I've a clean installation with PHP 8.1 and version 10.0.1

The project tree is fine, but with activities i've lost the nested view.

Which version of PHP is used in the demo?

Thanks

Hi

I'm also running it on PHP 8.1 and it was a clean setup too.

Hi,

Do you have any error in projeqtor log file ?

Hi,

I could reproduce, with PHP 8.1.
Create new project P1.
Create new Activity A11 on this project.
Create new Activity A111 under A11 
=> planning display is wrong

Ticket #6342 recorded