Erroneous double graphs in new dash

Linux raspberrypi 5.15.61-v7+ #1579 SMP Fri Aug 26 11:10:59 BST 2022 armv7l GNU/Linux

UI says Grafana 9.1.6, but I installed it from Rasberry Pi OS Package: prometheus
Version: 2.24.1+ds-1, Architecture: armhf

I have a prometheus data source which is providing two dummy metrics. I’m Trying to create a dashboard that graphs them. In Explore I’m setting two queries up, one for each metric. Hitting “run query produced” the expected two graphs -

Hitting “Add to dashboard” creates a new dashboard with two entries for each metric. Obviously I expected to get what was produced in the “run Query” results, just in a dashboard -

Further to this, if I try to edit the Dashboard it throws an error -

TypeError: l.find(...) is undefined

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