When I translate the State String, the Acknowledge button don’t work.
ignition 8.1.4 on windows.
I just tried this on 8.1.5 and couldn’t replicate the issue. I suspect there’s something else going on here – you might want to contact support so they can help you out.
[edit] I just realized you’re in Perspective. I was able to replicate this and I’ll make a ticket. 
I Created a button, with script
system.alarm.acknowledge
But here is another problem. Some alarm can't be acknowledged. And their eventid doesn't exist in Alarm.db.
In order to solve it, I tried :
disable the Use Store and Forward,stop ignition server, delete alarm_**** file in data folder , clear Alarm.db, then start ignition server .
And some new alarm appeared, which can't be acknowledged.
To alleviate the problem, I just delete the tag's alarm configuration.
Maybe I missed something, could you help me to find out what happened?
It looks like there’s a support ticket open for this – they can help you figure it out.