I see it now, thanks for pointing it out. Just for fun I recorded it with the 240 fps video mode on my phone and you can see that the text colour is changing fr

I see it now, thanks for pointing it out. Just for fun I recorded it with the 240 fps video mode on my phone and you can see that the text colour is changing from black to white in response to the mouseover but the blue highlight does not always render. Taking a new screen recording I did a quick time-space plot in Matlab. https://imgur.com/a/Pih5Q8m https://imgur.com/a/Pih5Q8m It appears to be an issue when you move your mouse more than one pixel per frame of the refresh rate.