@Antimob (2 January, 2018, 8:43 PM UTC):
You can't see troops en route to attacking you.

That's normal, as far as I am aware, so there shouldn't be any problem there.

@Antimob (3 January, 2018, 5:19 AM UTC):
If you mean when someone has sent a raid/invade to you, you'll get something like this (I can't find anyone to do that to me at the moment, but I tried my best).

https://prnt.sc/hvjp22

The person being attacked WILL be able to see: Who is attacking them, what the speed of the attack is, and how long it will take to reach them (Green boxes).

The person being attacked will NOT be able to see: Exactly what troops are attacking them (The red box; I got lazy and only sent a singular trooper, but you get my idea).

If you mean when someone's invaded you, same story. The difference is that:

When they send the reinforcements to you (In the form of reinforcing your sector; The green thing), THEN you will be able to see what troops they send to you, but that's usually defence.

You can also recon the troops stationned at your sector, which will tell you how many troops remain.

Is there another interpretation of this, or do you mean something completely different?

'The person being attacked will NOT be able to see: Exactly what troops are attacking them (The red box; I got lazy and only sent a singular trooper, but you get my idea)'

yes, unknown type and numbers

@Antimob (3 January, 2018, 4:01 PM UTC):
Then if my understanding of the problem is correct, then it must've been a bug before, where you could see them (You're not supposed to be able to see them).