https://bugs.kde.org/show_bug.cgi?id=381266
--- Comment #15 from Andrei Shevchuk <and...@shevchuk.co> --- I think I have a [decent workaround](https://shevchuk.co/notes/2021/03/06/chromium-web-apps-on-kde-plasma). The problem is that task bar seems to ignore instance name when making grouping decision. It also does not update grouping even if you update window class manually. As a workaround, we have to hide window from the task bar, then change its class and bring it back. But if we bring it back too quickly, taskbar still won't update grouping despite the new class, so we have to add some delay before bringing window back. So here is a script I use: ```sh #! /usr/bin/env sh TIMEOUT=10 # seconds T0=$(date +%s) if [ $# -ne 2 ] ; then echo "Usage: `basename $0`" '"class search regex" "new class"' exit 1 fi while [ $(( `date +%s` - T0 )) -lt $TIMEOUT ]; do w=$(wmctrl -l -x | awk -v e="$1" '$3 ~ e { print $1 }' 2>/dev/null | head -n 1) if [ -n "$w" ]; then wmctrl -i -r $w -b add,skip_taskbar xdotool set_window --class "$2" --classname "$2" $w sleep 1 wmctrl -i -r $w -b remove,skip_taskbar break fi done ``` Basically, we search for our window by class using regex, then hide it, change its class and bring it back. All in a loop with a timeout, so we don't search forever. Save it somewhere in your `$PATH`, e.g. `~/.local/bin/change-window-class` You can use it like this: `change-window-class "^class-regex-to-search-for" "new-class"` With Chromium web app: `chromium --profile-directory="App - Google" --app=https://calendar.google.com & change-window-class "^calendar.google.com" "web-app-google-calendar"` -- You are receiving this mail because: You are watching all bug changes.