Bug report: Toggling "begin text" (and its siblings) does not work right away
When using a "line" element, I can add text at the beginning, middle and the end. Clicking in the activate checkbox opens the respective input field. Clicking into the input field removes that very input field again and resets the checkbox to "unchecked". Only on second try it works.
See #301138: Entering begin/continue/end text for a line only works on second attempt