SavageTiger/MGSE — comment on commit e49374cccf833eaf3eaa44408765a33f73f2da38
File:  line 0
By SavageTiger:

The taskbarItem also shows up in for example Tint2, this means its not a problem of the extension. Most likely its the windowmanager that registers it wrongly, or the application registering itself wrongly to the window manager, i expect this issue to resolv itself overtime.