Still a bug in 1.19.50.23

In the en_US and en_GB .lang files, currently (as of 1.19.50.20) there is a missing "$" in the line for "death.attack.mob.item" causing an entities death message to display with an "s" on the end of the text.

Observed Results:
<player/mob> was slain by <mob> using <item name>s

Expected Results:
<player/mob> was slain by <mob> using <item name>

a fix would be: 

death.attack.mob.item=%1$s was slain by %2$s using %3$s