After Bandizip is newly installed or updated, you may find that a right-click menu (context menu) for Bandizip isn’t displayed properly as follows when you right-click an archive on the File Explorer.
This problem is caused by bugs in the File Explorer. Bandizip uses the OwnerDraw property which is provided by the OS to implement the "Preview Archive" feature. Because of some bugs in the File Explorer itself, however, the feature with the OwnerDraw property may fail to appear correctly; the context menu for Bandizip may not be displayed properly as well.
There is no perfect solution currently to this problem. You may disable "Preview Archive" in the settings of Bandizip as an alternative.