With the current Beta (Version 0.99.127.3-beta (WebKit 619.1.1)) and current (RC Version 0.99.127.3.1-rc (WebKit 619.1.11.111.2)) -- on current MacOS (14.5) I can no longer download documents from the Federal Communications Commission's document filing system. This is new behavior -- I rely on this system multiple times per week and it has always worked (and continues working in Safari).
For example, going to this URL (https://www.fcc.gov/ecfs/document/10730068575970/1) in either Orion or Orion RC bring up an error message that the address is invalid:

The error also appears with compatibility mode turned on.
Safari properly loads the PDF file.
I expected it to load the PDF file (as it had been doing).
Version 0.99.127.3-beta (WebKit 619.1.1)) / MacOS 14.5
Sonoma (14)