Trace is invisible on de/activating via legend

Steps to reproduce (use https://jsfiddle.net/5tf14onw/1/) (order is crucial!)

• I'm plotting several traces in a scatter plot.
• I double click one trace ("Hydro turbines and pumps" (call it x)) in legend to have an isolated view.
• I'm adding another trace ("Run-of-river" (call it y)).
• I deselect x.
• I deselect y. (On purpose, no trace visible now)
• I add x and deselect it immediately again and add it again
• Now I'm adding y. But it does not get displayed. Even though tooltips are shown for this trace when hovering.

从链接的 JSFiddle 复现开始，并按所述顺序执行图例操作。调查隔离、取消选择并重新添加轨迹后的轨迹可见性状态。完成的标准是：新添加的“Run-of-river”轨迹在最后的图例操作后显示出来，而不仅仅是可供工具提示使用。