When selecting contacts/leads in the respective view, clicking on the "Add to segments" button and the new tab pops up where users can select the segment they want the contacts/leads to be added, the select button on the bottom right corner stays greyed out and unclickable. The button is only activated (i.e. blue and clickable) when clicking into the corresponding row of the segment. This two-time selection is unfortunate and creates more effort for the user. I therefore suggest changing this two-time selection to a one-time selection.