Use open keepingyouawake:///activate twice will cause icon error

[dirichy]

when use open keepingyouawake:///activate once, the icon will change to white(open).
But if I use open keepingyouawake:///activate again, the icon will change to black.
I tried ps aux| grep caffeinate, it turns out that it's only an icon issue, the process is active after calling twice.