Cannot confirm this. This does not work for me. If I use it in the channel #Arnie I get:
<chan> No such nick/channel
<chan> #Arnie They aren't on that channel
If I type it and change <nick> for a nickname I get the same thing (keeping channel as <chan>).
If used in a script (I used an on text event) exactly as you typed it, it just echos: * /pop: insufficient parameters.
If I deop myself in #Arnie and then use the exact command you type (using <chan> <nick>) I get: * You are not an op on #Arnie - Which is correct.
If I replace both parameters in a channel where I am opped (you didn't make it clear whether or not we should replace <chan> with the channel name or whether bug lay within specifying <chan>) it will op the specified <nick>. If I deop myself and replace both params, as you may have guessed, I get the "You are not an op" error message.
I tested this on 6.14, XP Pro on DALnet.
Regards,
