Due to differences in the character counts amongst emojis and written text, many emojis including the ones with gender and skin tone variations have been counted as more characters, creating confusion.
To provide users with the ease to express themselves more elaborately, Twitter previously increased the number of characters from 140 to 280 per tweet.
"This update marks significant progress for our service because everyone can now benefit from the additional room to express themselves with more characters," the post added.
Additionally, Twitter has also released an update to their "Open Source" library - Twitter text 155 - to account for these changes.
(With inputs from agencies.)