Issue report
v2020-05-05, Windows10, x64, Reaper 6.13 x64.
TrackSendMute only works for the non-automated send mute. It does not work on the automated track send mute.
I remember Klinke talking about track send volumes and automated track send volumes being a different thing he didn't support as the automated version didn't exist when he was writing his csurf plugin.
So, the track send mute command only works on the trim/read version, but not on the one controlled in read/latch/touch/write/latch-preview modes.
This is easy to reproduce. The track send mute command even works in Read mode when the send mute is automated, so it's the trim/read mute. The same exists for track volume actually.
Nothing records on the activated and armed envelope lane for the track send mute.
But track send volume works fine, handling both trim/read volumes and automated volumes
.