I'm confused; I've had this feature on the free version for years (UK)

One thing I wonder though; I used to see rings propagating out to approximate where the thunder from a strike would be heard... I'm not seeing those any more.

Do I need to select something?

I'm confused; I've had this feature on the free version for years (UK)

One thing I wonder though; I used to see rings propagating out to approximate where the thunder from a strike would be heard... I'm not seeing those any more.

Do I need to select something?

Yes, that's the issue I'm referring to :)

Sorry my picture's not visible - I tried to use Dropbox as hosting but you need to log in to see it.

As you can see from the image; the lower right is displaying correctly. The upper left is missing interleaving lines.