Thanks for your reply. The previous same issue appeared on February 2016 and was resolved the days before March 4th 2016.
March 4th day was the day I mentioned the resolution in #RKC collaborative tools after different checks I did in the previous days.
I observed that lots of change in Twitter were done on Thursday around 5PM UK in 2016.
The same week of this resolution has been made also a great widget design change, with no more expand option but a like and share buttons instead, as well the time since the tweet has been posted.
Thanks by advance for your searches