Procedures list does not appear until re-launch AI2 (internal error)

[TIMAI2]

Any similar behaviours to this ?

Procedures already exist in a new project

Hi. Several times in past projects it happened to me to trip a bug when clicking in the procedures drawer (I had to close the navigator and restart again MIT App Inventor to be able to continue working on the project) But today I started a new project, and when clicked on the projects drawer, I discovered that some of the procedures of another projects were already there. In fact, I previously grabbed from the back pack just one of them. Does this give you a hint of what might be happening?