Wrong sound or no sound in Piano Roll Editor

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Sometimes when I click on a track to open it in the Piano Roll Editor, playing the track actually plays sound from a previously edited track. I have to leave the Piano Roll Editor, play the desired track in the Song Editor, then re--enter the Piano Roll Editor. Sometimes I must disable other tracks and then play it. This usually fixes the problem. Apparently opening a track in the Piano Roll Editor does not reliably change focus.

I just upgraded to 1.1.3, and the supplied fingered violin plays in the Song Editor but refuses to play in the Piano Roll Editor. I have tried disabling all other tracks in the Song Editor, and then playing the violin so that I'm absolutely sure it has focus, but it doesn't help. The Piano Roll Editor looks like it's working normally, but there is no sound.

This may be related to another problem -- A VST plugin that worked in 1.0.2 is completely silent in 1.1.3, from the time I load it and try to set it up to playing in either the Song Editor or Piano Roll Editor. It doesn't really matter since I can only load it into a new track. A project saved with it will not load it when relaunched.

Thanks in advance for any tips.
dcorner1953 wrote: Thanks in advance for any tips.
Welcome to the forum dcorner1953 ! First, For you, all important links:
http://lmms.io/forum/viewtopic.php?f=1&t=4740
And a few rules for Avatars, signatures, posting and using the right sub-forum :)

Your issue could be, that you have muted Beat&Bass-tracks
A not fully understood 'connection' with muted tracks and piano-roll appear irregularly, and has yet to be solved
If you have that:
With the track-grib,

Image
Nobbled area leftmost in picture
Try to move the muted Beat&Bass-tracks to a different position in song-editor
If it is this bug im thinking of, that will fix the problem, (so will unmuting, or deleting of the Beat&Bass-track)
Thank you, MusikBear! Deleting the Beat/Bass track resolved it. I'll watch for the other behaviors when I add the Beat/Bass back in. I went for the Bigger Hammer first.