Problem with typing dissapearing

[samcv]

See this video that demonstrates the issue:
https://cry.nu/files/konsole-typing.webm

1. top -b -n 1 | tail -n +7 | sed -re 's|^\s+||g' -e 's|\s+| |g'
   and editing it to read
2. top -b -n 1 -p $(pgrep -x plasmashell | head -n 1) | tail -n +7 | sed -re 's|^\s+||g' -e 's|\s+| |g'

As soon as the | character is added inside the $( ) then all text to the right dissapears. I have tried this using zprezto with all other plugins disabled, and also in a totally clean configuration (minus the history-substring-search plugin enabled). So this is the plugin which is causing the issue. Can anybody replicate?

Also if it doesn't seem to work, try running: top -b -n 1 | tail -n +7 | sed -re 's|^\s+||g' -e 's|\s+| |g' so that it gets added to your history and then try adding the $( ) section as shown in 2. above.

[abraithwaite]

I'm having a very similar issue since upgrading to zsh 5.4.1 on OSX

Downgrading to homebrew zsh 5.3.1_1 fixes the issue for me.