BU16 stops sending MIDI but Grid Editor sees it correctly

Hi All, I have a BU16 (D-51, firmware 1.4.1) on macOS 15.7.2 that, after being left on for some time, seems to stop sending MIDI messages (I monitor that using MIDI Monitor). The crazy thing is that the device still seems to be working normally inside the Grid Editor.

This has been happening to me almost every day lately. The issue reminds me a little of this, though of course it is clearly different.

Any suggestion? Thanks!

This is caused by the Editor most likely. There is a bug where the Editor will hijack Grid as a MIDI device from other DAW applications.

IIRC it has been fixed on the Nightly branch a couple of weeks ago, you could give it a quick try just to test it.

Thanks @narayb I am actually quite sure that I did not have the Editor open at the times I experienced the issue. What else do you suggest, or what kind of debugging can I do to help you?

Please test it with Editor and without it if you can, you can find the issue that I described earlier here: BUG: Editor hijacks MIDI/USB device · Issue #1303 · intechstudio/grid-editor · GitHub