When using split tunnel, if I enabled PIA DNS, set the DNS inside PIA or use Built-in resolver, being able to access devices on the local network via their network name will fail. I have specific programs setup to use PIA and everything else is set to bypass, but the programs and even Windows itself will no longer be able to access devices via their network name if any of the above are set. If I select "use existing DNS" then it will work properly.

Being unable to access local network devices via network name while PIA DNS is selected forces me to manually set the DNS on my network connection to one of the available "open source" DNS options but that still means the apps I want to use secure PIA DNS for are still sending DNS requests out like normal instead of using the secure PIA DNS.