Events which are present in VIS : hoverEdge and blurEdge are missing in anular-visjs directive list and ignored . Example from source code
var networkEvents = [
'click',
'doubleClick',
'oncontext',
'hold',
'release',
'selectNode',
'selectEdge',
'deselectNode',
'deselectEdge',
'dragStart',
'dragging',
'dragEnd',
'hoverNode',
'hoverEdge',
'blurEdge',
'blurNode',
'zoom',
'showPopup',
'hidePopup',
'startStabilizing',
'stabilizationProgress',
'stabilizationIterationsDone',
'stabilized',
'resize',
'initRedraw',
'beforeDrawing',
'afterDrawing',
'animationFinished'
Events which are present in VIS : hoverEdge and blurEdge are missing in anular-visjs directive list and ignored . Example from source code var networkEvents = [ 'click', 'doubleClick', 'oncontext', 'hold', 'release', 'selectNode', 'selectEdge', 'deselectNode', 'deselectEdge', 'dragStart', 'dragging', 'dragEnd', 'hoverNode', 'hoverEdge', 'blurEdge', 'blurNode', 'zoom', 'showPopup', 'hidePopup', 'startStabilizing', 'stabilizationProgress', 'stabilizationIterationsDone', 'stabilized', 'resize', 'initRedraw', 'beforeDrawing', 'afterDrawing', 'animationFinished'
Adding them to list fixing the problem