actualy i have been getting this problem long ago, like year.
the widget version 1 and widget version 2.
generated by previous Widget builder per user.
had similiar problem which is sometimes run, and sometimes full blank time line.
Twitter engineer still investigating the problem of live timeline blank.
This problem (blanks) seem it is on the code
type: ‘profile’,
but still works on the
type: ‘search’,
but the result might not show the latest tweet. (unless it was refreshed).
to do the profile type we need the
data-widget-id=“twitter-given-value”
that can be generated by our account on twitter. when making the latest widget.
but these widget have a problem, it doesn’t show time line live(realtime),
but “data-widget-id” will not working after you delete the widget.
i meant the style have no sliding timeline, as usual, but more like static line.
i do think this Slide time line style is missing. on latest account widgets.
the name is : "class=“twitter-timeline” "and don’t know what version is the latest widgets i am using.
So this is my suggestion.
if you like what i like of widget version 2
try using type: search, not profile.
as it still have a bug.
and try using
your own account widgets code that is taken from your twitter account settings.
as a profile widgets.
for while this method will help you out from became blanks.
feel free to see twitter result on our website simply open at :
http://boomerangindonesia.com
GoodLuck, and i hope Twitter pay attention by maintaining all version of stable widgets.