Found it!
In the console, Chrome gave me an error related to MacAfee (sorry, I lost it, I copied on WordPress’ forum but I cleared the caches before sending it, and their system then flushed my message and asked me to reloggin).
Anyway, it was about a Query String and I remembered that I had a configuration about that on the CDN (StackPath), that is, to ignore them. I changed that, cleared the browsers’ caches and the problem on the blog disappeared. In a nutshell.
Problem solved!