On Linux, I had the .desktop entry so I could pin nsight compute but whenever I opened it, it would show up as a new entry on Dash. Somehow Gnome couldn’t tell these are the same.
It is fixed if I add this to the .desktop entry: (/usr/share/applications/nsight-compute.desktop)
StartupWMClass=ncu-ui.bin
Posting this here in case someone runs into this. Also maybe you can just fix this for next version.