Using separate \footnotemark and \footnotetext, you could manually delay the footnote until it has to split over two columns. Not exactly what you were looking for, but closer.
microtype now patches various commands to inject protrusion and they can fail in various places.
The typical workaround it to disable the patch (either make an educated guess or disable all patches) ...
I am not sure if this is reason. I think the \label command introduce space to mess up the multifootnote typing. This is a working example:
With use of the \tabularray and copyright packages: