3D hover labels don't show up with `mouse-change@1.4.0`

[etpinard]

that is 3D hover labels are broken in bundles built from a fresh npm i --- fixed in v1.21.3

Commit mikolalysenko/mouse-change@2aba950 and more precisely this line ensured that mouse change listeners could be detached. Unfortunately, our gl3d scene code relied on the old (mouse-change@1.3.0) buggy behavior here.

Removing that above line

 scene.glplot.mouseListener.enabled = false;

in plots/gl3d/scene.js appears to solve the issue. But, I afraid that it might lead to side-effects such as memory leaks. We should look into this in depth before merging a patch.

[etpinard]

cc @dfcreative @alexcjohnson

[rreusser]

Am I correct in understanding that plotly simply doesn't use mouseListener.enabled = true anywhere? Or if that command was broken, perhaps it does use it even though it requests not to. At least I'm not immediately able to find a reference to where it is used. It sounds like that might indeed leak a bit of memory then if listeners are reattached but never detached. Perhaps they only leak on initializeGLPlot? That doesn't sound horrible.

This is a bit confusing.