On KDE Neon, Task Coach 2.0.2.2
System tray icon issues:
The icon is not so good, it's an unclear calendar-looking thing instead of the Task Coach logo:

Feels weird that left-click just opens menu same as right-click. I would think left-click would bring the window forward or something.
Show/hide works for hiding but not for showing.
Tracking efforts is more likely to do from the tray than making new tasks, so I think the menu order should be rearranged. First item after show/hide should be the "stop/resume tracking" followed by the one that does "start tracking effort…" with submenu, and that one should be ordered by the most recent tasks rather than alphabetic. And then the various "new" items could be after that.
On KDE Neon, Task Coach 2.0.2.2
System tray icon issues:
The icon is not so good, it's an unclear calendar-looking thing instead of the Task Coach logo:
Feels weird that left-click just opens menu same as right-click. I would think left-click would bring the window forward or something.
Show/hide works for hiding but not for showing.
Tracking efforts is more likely to do from the tray than making new tasks, so I think the menu order should be rearranged. First item after show/hide should be the "stop/resume tracking" followed by the one that does "start tracking effort…" with submenu, and that one should be ordered by the most recent tasks rather than alphabetic. And then the various "new" items could be after that.