In general, I am feeling more certainty that the action for creating cards must be changed to address:
accessibility (for people with varying ways of interacting with the application, for touch screen devices, etc.; please consult Wikipedia on web accessibility, W3C standard WAI and WCAG, or more generally accessibility)
intuitive interaction with cards and canvas
ability to link cards and existing tree structures to cards
Reproducing steps:
Expected result:
Actual result:
Environment: