https://www.oracle.com/tools/downloads/apex-downloads/ states that patch version 5 was released on March 11 and the README (https://updates.oracle.com/Orion/Services/download?type=readme&aru=25599297) for Patch 35895964 on MOS states that it is 23.2.5 but the actual download ZIP file has not been updated and still downloads version 4.
The MOS doc states that the patch was updated on March 6 but it looks like they forgot to actually update the ZIP file (over a week later).
FYI to anyone trying to obtain and user it – you are probably inadvertently installing version 4.