Twitter now counts all emoji equally, regardless of gender or race
With only 280 characters to work with you already have to be pretty careful about how you phrase your Tweets. However, a quirk in the way Unicode handles emoji has meant that some of the symbols take up many more characters than others. For example, a flag can take up as many as 14 spaces in your Tweet. Twitter has
The fact that certain emoji take up more space in your Tweet wouldn’t necessarily be a problem, were it not for the fact that emoji designed to be more inclusive have in some cases ended up taking up more characters than the original yellow emoji.