Query String fails with multiple keys of same name

First of all, thanks for this excellent plugin!

I have discovered a limitation with the Query String visibility rule that I can’t quite seem to work around. There are many situations where you may want to pass multiple values under the same URL parameter, but it doesn’t seem like Block Visibility supports this. I need to be able to trigger visibility based on one value of potentially multiple within a single key.

My natural inclination would be to use the format ?key=value1,value2. but partial matches like this aren’t mentioned anywhere in the documentation. Ok, so I thought I would go for ?key=value1&key=value2 instead. But this also doesn’t work, seemingly because Block Visibility stops matching after the first occurrence of key.

Any chance one format or the other could be supported?