I have a scatter3d chart with a pretty long annotation text (posted in my plot.ly account under username dmitrys).
I noticed that pressing hover off then hover on button erases my annotation text completely. This happens both with offline html and online from an account with plot.ly. I tried it with Chrome v54 and Opera v15 and the problem persisted.
Possibly related: my company manages settings in Internet Explorer, restricting scripts and ActiveX.
When I tried the same with IE 11, it asked me if I wanted to allow blocked content. I chose “Allow” and my scatted3d appeared but without annotations.