I want to know, please, if there is a mean to access Tickets of Project, while I am on Project Form Details.

No.

It is a huge benefit for us to go to Menu Projects, select project and then get its information and the Tickets within it (or At least a manner to access directly Tickets filtered to show only those of that project)
Is that permitted ? or planned on roadmap ?

Project Selector (on top left) is done for that. :whistle:
Just select your project and go to ticket menu : list is filtered on tickets for selected project. 😉
And this works for all screen :woohoo: