[keyindicator] is crashing some apps

[akhiljalagam]

caps lock behavior is strange after reloading i3 config for key indicator which is using pkill.
on pressing caps lock, its closing floating/pop-up windows on i3wm.

I suspect i3wm is doing something to floating windows on caps lock when pkill command triggers.

Expected behavior

caps lock indication

Actual behavior

crashing floating/pop-up windows on i3wm
ie:

1. while editing firefox containers names.
2. keepassxc always crashing in floating mode.

i3blocks config relevant to blocklet(s)

bindsym --release Caps_Lock exec pkill -SIGRTMIN+11 i3blocks
bindsym --release Num_Lock exec pkill -SIGRTMIN+11 i3blocks

Output of blocklet(s) when run from command line

CAPS NUM

Output of any relevant other commands that might help diagnostics

to reproduce this

1. enable keyindiactor and restart i3wm
2. open firefox browser containers app and edit a container name with caps lock. it will crash.
   or
3. just open keepassxc and pres caps lock 2 times. it will crash.