Sayonara closes (n)vim like there is no listed buffers when calling it from popups

[msva]

Hi there!
I've found that if there is active notification popup, created by nvim-notify, and I call Sayonara, it (Sayonara) just quits nvim as if there was no opened buffers.

I previously reported that to nvim-notify (here is a link o the issue: rcarriga/nvim-notify#147 ), and I wrote there that I think it can be related to unlisted buffers that popup creates, but I'm not sure.

And here is a asciinema recording showing the issue: https://asciinema.org/a/YhWFoYswb9CebKwtnRfOhEu4e

At #1 I just pressing "q" which is mapped to <cmd>Sayonara<CR>, and Sayonara closes buffers (as expected).
At #2 I firstly call notify to create a notification pupup, and then call Sayonara and it closes the whole nvim instance instead of just current active buffer...