There's only one delay type now - the Legacy Delay, you probably mean the local presets.
BROWSE always showed all the available presets for 'normal' stomps. Since the delay is now treated as any other stomp (free placement anywhere in the signal chain), it behaves the same way.
Yes for delays I wasn't able to see the local presets.
For the second issue, for example, when I select vintage chorus by the type knob, I should only see chor vint ce-1, chor vint psy, etc. by using the browse knob, right? But I can select any type of the local presets, like comp default or dist fuzz old. So either the type is not functioning properly or there is no need to use the type knob for selecting stomp boxes.