Hey there, thank you very much everyone for your comments and responses. Yesterday I contacted postman’s technical support and they gave me an answer:
I installed Postam Canary to validate if the problem persisted in that version. However, in this version it works normally.
What I did then is uninstall Postam 8.0.8 completely from the system and delete the files in these two locations:
After that I installed Postman 8.0.9 and it now works normally.
Thank you all very much, I hope this can serve you all.