Image / button hover effects from slide layouts delayed and inconsistent
I have a strange issue. I'm still very new to Storyline 360 but feel I've got to grips with most of what I need reasonably well now.
I have some slides with a custom navigation bar which sits in a slide master and its layouts. When I hover over buttons which exist in the layouts, the behaviour is very inconsistent. It often needs a good bit of mouse wiggling before it registers the fact it should be displaying a hover state.
Any images on the slide itself, the hover effects are instantaneous and consistent. This happens in preview, and also if I publish to web to test out slides. I've attached an image that might clarify slightly.
Is this a known issue? Am I doing something I shouldn't be?
I am certain it was working just fine a few days ago, but now, all slides I test have the same problem. Any hover states on the slides themselves work great, the slide layout hover states are really flaky.