gelalaw on "[Plugin: W3 Total Cache] Sidebar widget disappear on some pages"

Used 3 total cache Version 0.9.2.11 & Amazon cloudfront (pull) for weeks. No problem until today after updated a few pages. CTC Tag Cloud Sidebar Widget disappeared on some pages. It reappeared if de-activated W3TC.
Purge all cache in plugin but problem still exists.
You can see the widget wz title as "Discover" on home page:
http://www.buddyland.hk/
I used the same sidebar for all pages, so it should appear as usual on other pages like dream/play etc....but it did not...
http://www.buddyland.hk/dream/

http://wordpress.org/extend/plugins/w3-total-cache/