Two minor problems with CUA rectangles

[martin rudalics]

Suppose I have a TAB with a text-property that specifies a background
color.  Consequently, all characters from TAB to TAB + tab-width are
displayed with that color.  If I now install a CUA rectangle on the
right of the TAB and subsequently expand the rectangle to a position
between TAB and TAB + tab-width, the characters between the TAB and that
position are displayed with default background.

M-x revert-buffer with an active rectangle in that buffer apparently
deactivates the rectangle but overlays used for the rectangle are not
removed.  C-l does not remove them either.

With

(custom-set-variables
  ;; custom-set-variables was added by Custom.
  ;; If you edit it by hand, you could mess it up, so be careful.
  ;; Your init file should contain only one such instance.
  ;; If there is more than one, they won't work right.
 '(cua-enable-cursor-indications t)
 '(cua-mode t nil (cua-base)))