Hi!
On the Mac version of EasyEDA, keyboard shortcuts (e.g., CMD+A, CMD+X, CMD+C, CMD+V) do not work in any textfields. This includes dialogs with textfields, side panels with textfields, and across all file types (e.g., schematics, PCBs). As a workaround, things can be selected/cut/copied/pasted by right-clicking and selecting the appropriate menu item, but this is inconvenient/slow.
Safari
14.0
OS X
10_15_7
EasyEDA
6.4.7