I wanted to propose a feature to Inkdrop on Linux that would allow Linux users to manage this app just as you would with any other app built on GTK.
As you can see from the screenshot, the theme of the Inkdrop window does not match the other windows. I also cannot right click the Inkdrop window and choose GTK app options such ‘Always show on visible workspace’.
What’s interesting is that the Inkdrop Preferences window does receive the GTK theme and does allow GTK app options. I also found that when you list the dependencies for inkdrop, you’ll find it depends on the libgtk-3-0 library: