since 8.5.15 clicking on the on/off button on the sends of a channel is very sluggish and imprecise.
i need to clik repeatedly on the button before it activates. it seems also i need to be in the upper area of the button for it to work. its anyway quite fiddly and now its really a awkward!
1 step forward, 0.8 steps back! welcome to the world of ever improving software!