When I used Firefox because I wanted to read Minecraft new update I got theses:

Access Denied
You don't have permission to access "http://www.minecraft.net/" on this server.
Reference #18.b63b3717.1652911935.93e27e6

Access Denied
You don't have permission to access "http://www.minecraft.net/en-us/bugs" on this server.
Reference #18.b63b3717.1652912086.93e6a5f

It also wouldn't allow me to use Firefox to register to create my account here so I had to use Chrome instead to file this report and watch Minecraft 1.19-pre1 change log.

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:100.0) Gecko/20100101 Firefox/100.0

Thank you for you for your help in advance!