Had a planet flux alert from Gallin appear on my alerts, and then 9 minutes later Schrodinger fluxed another one, and the two alerts stacked, so now I can't zero Gallin for two days for fluxing his terra that I scanned fair and square.

Come on over to Eots and wait for him to alert an NPC
It's only fair.

Seriously though this is an extremely rare occurrence but it would be nice if it didn't stack.

Guess I better not get disabled in the next two days then.

The same thing happened to me a while back. I thought it was incredibly unlikely that someone temp fluxed 2 planets of their planets and I had them both on scan. Makes more sense it was two separate people at similar times.

Last time I got a "planet was fluxed" message (couple weeks ago) the associated link only allowed me to view them. There was no attack button. You don't get a free target just because someone fluxes one of their planets (at least you shouldn't, as it was a non-hostile act).

Now I would agree that combining messages from different players is not good. You should be able to see all the players that fluxed planets so you can (if you keep track of such things) update your planet list.

I'm guessing that they friends or legion mates as I can assure you the flux alerts that show up on my ship's log give me a regular attackable link to the ship that fluxed the planet.

Nope, they were neither. They were in a different legion, and I had no real interaction with them. Only have a few GL players on my friend's list and they are all in the same legion as I am. Wonder if rank difference has anything to do with it. Don't know what to tell you then.

It might be their planet, but they still removed a planet from your scan.
Hell, they could have fluxed a planet that you use to own.

You can attack people from that message, you probably had them as a friend.

Already stated, they weren't on my friend's list. It's a very very short list.

The other day I scanned 2 terras from NarayanAstra. He fluxed them both the next morning.

Next time you see a non-legion non-friend fluxing that doesn't allow you to attack you should post a bug report.