a potential solution could be to use discord/slack in chrome/firefox app mode
#Glitchy window in dwm for slack and discord
lapis socket
are you using a compositor? I haven't had this issue so I I'm purely guessing but it could be some damage setting in compositor config
inland drift
you can have every web app be a bit like a desktop app
for example chrome --app=https://whatsapp.com
it hides the address bar and tabs