pasting commands missing characters

When i pasted this into the session:
show version | i uptime|System image|Model Number
show switch
show ip interface brief | i Vlan|Gig
show run | sec aaa
show run | sec tacacs
show run | sec radius
show run | sec username
show run | sec line con
show run | sec line vty
show access-lists
show ip ssh
show crypto key mypubkey rsa
show aaa servers
show tacacs
show users
show logging | i AAA|TACACS|RADIUS

When it got to this command "show run | sec aaa" it removed the s. This has happened in version 12 and 13.

Here is the output of the issue:
TwentyFiveGigE1/0/39 unassigned YES unset up up
TwentyFiveGigE1/0/40 unassigned YES unset up up
DISTR02_48Y4C#how run | sec aaa
^
% Invalid input detected at '^' marker.