Yes, this is my antispam filter. I got a lot of feedback years ago about that and create that filter. If more than x persons die - it doesn't spam in chat, it shows info to you and saves it in the addon report, so you can re-send info using the addon. Because usually this happens during wipe and no one cares what happens if more than x people die simultaneously.
oh the minimap button was added by me more than 5 years ago now I cannot do such big change, you can disable the button in option's menu or if that addon gives a possibility to create a custom button that calls "/rach". P.S. I've used different addons for a map and always was able to move all buttons :)
I've found a bug, it was broken during another bug fix :) Now it should work (just tested in party heroic (I've never done Mythic so can't test it there), let me know if you find something else broken :) Will be available on curse after approve.