Seems to work for me aswell. I also noticed that they added a hcaptcha that needs to be solved before going to the page.
When sending a GET request to https://help.minecraft.net/hc/en-us/requests/new it seems to be still returning error code 403 rather than the 200 it used to return before the issue started
This issue seems to be occurring for every category & subject in the support ticket form.
I also get this error on both the requests page and the feedback page.
Can replicate this issue. Heading to https://help.minecraft.net/hc/en-us/requests and after signing into a Microsoft account, it gets redirected to this empty page.