Minor bug report:

Shift+E pasting an event on a tile and then immediately after pressing E to edit the event causes the event window to display as if there's no event, and if you then press OK there will be an empty event on the tile.

Moving the mouse after using Shift+E or doing anything that causes MLLE to "update" (or whatever) and then using E to edit the event works fine. It seems like the event isn't updated the second you paste an event.

This is quite annoying if you're used to Shift+E and then E to edit the newly placed event (like if you're pasting several enemy events and want to change the difficulty on each one of them).