Sceanrio:
- create new spreadsheet document
- select all three tabs
- enter text 'Cell A1' in cell A1
- enter text 'Cell A2' in cell A2
- enter text 'Cell B1' in cell B1
- enter text 'Cell B2' in cell B2
- highlight row 2
- right-mouse-click the 2 in the grey box of row 2
- choose 'Delete Contents...' from the context menu
  -> contents of selected row is deleted for all three sheets as expected
- undo
- right-mouse-click the 2 in the grey box of row 2
- choose 'Insert Rows' from the context menu

Expected result:
- a new row gets insert for all three sheets as all sheets are selected

Actual (buggy) result:
- a new row only gets inserted for sheet 1
- sheet 2 and sheet 3 remain unchanged although they are selected

Remarks:
- the same applies to
  - deleting rows
  - inserting columns
  - deleting columns
- they only function from the conext menu that works as expected is 'Delete 
  Contents...'