The default.lua file has an error in it, you have to edit it if you want to bind anything in the threat warning aux panel. See this post, at least for the rwr power button this fixes it (you'll have to do this each time ED released an update until they fix it on their end). Just, you know, make backups of the default.lua files just in case.
https://forums.eagle.ru/showthread.php?t=262403