Steps: 1. open writer 2. insert a header or footer from the Insert menu or from the document UI 3. write some text 4. delete the header or footer from the Insert menu or from the document UI 5. undo button and undo entry in Edit menu disabled Version: 6.1.0.0.alpha0+ Build ID: 25cd843664919974f0d21ca7a0b02cc43e9eeabb CPU threads: 2; OS: Linux 4.4; UI render: default; VCL: gtk2; Locale: en-US (en_US.UTF-8); Calc: group
*** This bug has been marked as a duplicate of bug 46561 ***
Not sure how this is a dupe when this is about disabling footer/header and bug 46561 is about inserting a footer/header.