'switch-to-buffer' no longer searchable in 2019.1

[cpoile]

What steps will reproduce the issue?

1. bring up the switch-to-buffer dialog with whatever shortcut you use (it has the label Recent files when it shows up, but its different from the built-in recent files dialog, which does allow typing)
2. type some keys

What is the expected result?

• It should narrow down the files as you type.

What happens instead?

• There is no response to key typing.

Version: 2019.1 (191.6183.87)

Thanks for a great plugin!