Cannot use `on-notify` in second pass criteria

[technosophist]

I'm on v1.10.0

I'm trying to configure mako to play a notification sound for only the first notification in a group. I attempted to do this with:

group-by=app-name

[!grouped]
on-notify=exec @mpv@ @notify@

[grouped]
on-notify=none

But it always plays a sound. I'm able to use on-notify in other criteria, e.g., this mutes the sound when dnd mode is enabled:

group-by=app-name
max-history=100
on-notify=exec @mpv@ @notify@

[mode=dnd]
invisible=1
on-notify=none

[app-name=dnd]
invisible=0
on-notify=none
default-timeout=5000
group-by=none

I'm also able to apply style options:

group-by=app-name

[!grouped]
on-notify=exec @mpv@ @notify@

[grouped]
background-color=#ff0000
on-notify=none

Will play a sound for all notifications, but only color grouped notifications red.

Based on this statement from the manpage: "In addition to the set of options at the top of the file, the config file may contain zero or more sections, each containing any combination of the BINDING OPTIONS and STYLE OPTIONS." I didn't expect that second pass criteria would be unable to apply some options.

Is this a misunderstanding on my part? A bug or an expected limitation?