With the information I have, I don't have any other appellate decisions that have upheld its constitutionality. I have some other, earlier lower court decisions predating Nur and Lloyd that were upheld in Ontario and in British Columbia in 2004, 2010 and 2016. I also have a B.C. case in 2018, which would have predated the decision that my colleague spoke to you about. A 2017 Ontario lower court struck the MMP as well.
On May 17th, 2022. See this statement in context.