Resizing the time at the right side of the Skype Window

Sometime in the past year, something changed about my Skype window. The time on the right side takes up three lines instead of just one. The result is that I can only fit about 5 lines of conversation on a screen, because the time is not sized properly. See the attached image:

See how the time on the right side takes up three lines? That spreads the conversation out too much vertically. How can I resize that portion of the screen to make the conversations more compact? This is in Skype for Business Basic.