Comment 2 for bug 1891649

I have the same problem.

The workaround using "/snap/chromium/current/usr/lib/chromium-browser/chrome" would link to the correct dash icon. But the app-chromium uses the profile path ~/.config/chromium/Default in this case instead ~/snap/chromium/common/chromium/Default. And when I open a link in the app-chromium it opens a new window in the same profile and a new dash icon (WM_CLASS chromium-browser instead of chromium). Hence this is no useable workaround for me.

Parameter --profile-directory also does not work - seems like chromium do not want to start a second process with the same profile.