Partitioned my 2019 MBP with Bootcamp, but am unable to boot to the partitioned "Bootcamp" drive

Hi everyone,

I have a 2019 MacBook Pro that is running Catalina 10.15.4. Just yesterday I used Bootcamp Assistant to create a Windows 10 partition on my MBP. However, when I rebooted my MBP after Bootcamp Assistant finished, startup manager only showed one partition I could boot from: Macintosh HD.

As well, Startup Disk in system preferences only shows my Macintosh HD.

However, Disk Utility shows that the Windows Bootcamp partition does exist (output of 'diskutil list'):

/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *500.3 GB   disk0
   1:                        EFI EFI                     314.6 MB   disk0s1
   2:                 Apple_APFS Container disk1         435.0 GB   disk0s2
   3:       Microsoft Basic Data BOOTCAMP                65.0 GB    disk0s3


/dev/disk1 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +435.0 GB   disk1
                                 Physical Store disk0s2
   1:                APFS Volume Macintosh HD - Data     156.3 GB   disk1s1
   2:                APFS Volume Preboot                 81.9 MB    disk1s2
   3:                APFS Volume Recovery                528.1 MB   disk1s3
   4:                APFS Volume VM                      1.1 GB     disk1s4
   5:                APFS Volume Macintosh HD            11.1 GB    disk1s5

Is there some sort of security setting preventing me from booting into the Windows Bootcamp partition? I also thought it was a bit weird that after Bootcamp Assistant finished doing its thing, my MBP wasn't rebooted directly into the new partition, but rather just shut down.

Any help would be greatly appreciated.