There are a couple of issues with the jquery.range (jRange) control used by the affinity tool, and the jRange project seems to be mostly dead. I'm thinking of replacing it.
There aren't a lot of options. There's either leongersen/nouiSlider (github) or the HTML5 range control. I'm currently leaning towards the HTML5 range control even though labels are an issue on some platforms, and it's only a single control. So to do this we would probably remove the "minimum" range setting. The nouiSlider would preserve dual control but integration might take a few weeks.
You are welcome to weigh in with opinions but this is strictly about what technology to use for the controls in order to support this tool into the future. Please do not use this thread to tell me the affinity slider sucks. If you don't like it or don't want it, turn it off. There is a recent patch for affinity tool behaviour which should land on Hubzilla, Osada and Zap in the next few days.