Created a set of disc bullets, then selected one line, and tried to drag it to another point in the list. Result: instant CPU loop. Repeatable. Had to kill process with task manager. Re-open item from Drafts, same loop occurs when dragging bullet. Win 10. Emc 7.2.36908.
Can you uninstall eM Client, making sure not to delete the database directory when asked, and download and install 7.2.35595 from the Release History. See if there is any difference.