Pressing Ctrl+Z in the Native Library editor closes the editor (instead of undoing the last editing).
Tentatively classifying this as a bug report; it might just be the undo/redo system being nonintuitive (eg it’s taking you back to the last change you made which happens to be in a different form/server module/etc)
It happens after an editing in the native library editor. It closes the editor, doesn’t open another document and doesn’t undo the last edit.
It works as expected with other documents.
Definitely a bug then! We’ll get that fixed.