Here's another of the seemingly numberless little quirks of REAPER.
I have two of my monitoring FX floating. YouLean Loudness Meter is indeed 2/5, but Voxengo Span is not, nor could be 2/2! But when I open the monitoring FX chain window, REAPER all of a sudden realises that Span is actually 2/5.
I don't actually care if this gets fixed. The other things I report, I do. I have never used any other software* with so many of these tiny annoyances, which are generally so small that individually I am almost embarrassed to report them, but when considered all together, with many different ones popping up during a Reaper session, drive me up the wall.
It's just that Reaper is so good I'd like it to be perfect
(*Reaper is the only DAW I've used)