https://pastebin.com/sjQfQrCa the group in question

Sometimes this group will not bring up the cooldowns of people in question, as if they were never used. Happens only sometimes in some arenas. No clue what is causing it - there are no thrown LUA errors.

Will update with more information if I get more?

E: This happens inside an arena. I've had cases of other auras not appearing inside arena too. Also no errors.

https://pastebin.com/rP4CCJhC

There is this error that is constantly thrown, but its for Gladius. Doubt this will help, but...

I think it has something to do with how units are tracked. I am using the default 'Party 1-4' which is the autofill way to put it. I notice if my hunter loads in before my mistweaver, I can see his trap tracked. But when my mistweaver loads in (who has leader, making him party1), the trap disappears and I only see the mistweaver's stuff.

E: Changing 'Party 1-4' to 'Party1-2' does not fix the issue.

Another note: When I track things on the other team, I often use 'Arena 1-5'.

Is it possible that something in one of the latest versions of TMW changed something with how units are tracked? Or did Blizzard?

Also worth noting: in the group I put in the pastebin, kicks are always tracked as Party1 and Party2 in separate icons respectively. Those ALWAYS work properly.

Reverting to 8.5.7 seems to have fixed this, at least the party abilities part. Though since for other icons it was intermittent, I will at least assume any occurrences of those are fixed too.

So some commit between 8.5.7 and 8.5.8 is to blame I assume.

Are you able to try installing versions between 8.5.7 and 8.5.8 to see if you can identify which one introduced the issue?

I'll try to do that in a bit. End of PVP season has me very busy.

Don't worry about it too much. Other people appear to be reporting this too, so I should be able to track it down myself.

Yea I was about to say someone on Curseforge reported about Lifebloom tracking on Group 1-40.

Fixed in 8.5.9, packaging now on Curse.