Checklist

• I have read the appropriate section in the contributing guidelines
• I believe this issue is a problem with polybar itself and not a misconfiguration on my part
• I have searched for other open and closed issues that may have already reported this problem
• I have checked the known issues page for this problem.
• I have followed the debugging guide to narrow down the problem to a minimal config.

Steps to reproduce

I believe label-fail part is still buggy, it seems to work randomly and fails to execute randomly.

1. If you randomly restart polybar, it seems to toggle between working / not working

Minimal config

[module/restock]
type = custom/script
interval = 300
exec = ~/.scripts/stock.sh
 
label = %output%
label-font = 15
format =  <label>
format-background = ${colors.red}
format-foreground = ${colors.black}
format-padding = 1
format-font = 3
 
label-fail = %output%
label-fail-font = 15
label-fail-foreground = ${colors.black}
format-fail =  <label-fail>
format-fail-background = ${colors.bg-alt}
format-fail-foreground = ${colors.dark-red}
format-fail-padding = 1
format-fail-font = 3

Polybar log

No response

Expected behavior

The label-fail condition doesnt execute everytime, In order to fix it I have to restart polybar randomly.

Actual behavior

see expected behavior

Window Manager and Version

i3-gaps

Linux Distribution

Arch Linux

Polybar version

polybar 3.6.1

Features: +alsa +curl +i3 +mpd +network(libnl) +pulseaudio +xkeyboard

X extensions: +randr (+monitors) +composite +xkb +xrm +xcursor

Build type: Release
Compiler: /usr/bin/c++
Compiler flags: -march=x86-64 -mtune=generic -O2 -pipe -fno-plt -fexceptions         -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security         -fstack-clash-protection -fcf-protection -Wp,-D_GLIBCXX_ASSERTIONS -O3 -DNDEBUG -Wall -Wextra -Wpedantic -Wsuggest-override
Linker flags: -Wl,-O1,--sort-common,--as-needed,-z,relro,-z,now -Wall -Wextra -Wpedantic -Wsuggest-override  -Wall -Wextra -Wpedantic -Wsuggest-override

Additional Context / Screenshots

No response