MIDI bender automation drawing glitches

MIDI bender automation drawing has somehow degraded into this glitchy behaviour in my session. When I add new nodes, they are offset to the right. Has anyone else experienced this? This behaviour persists after I restart Ardour, but not in a new empty session.

Peek 2022-12-03 14-37 Ardour bender automation

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It seems that temp changes mess up MIDI region parameter automation. Note in the gif below that in the initial and third 120bpm regions, it works correctly, but in the middle 180bpm section, drawing behaviour is offset.

Peek 2022-12-04 15-31 Ardour bender automation 2

Created a bug report: 0009142: MIDI automation drawing is offset after tempo change - MantisBT