1. A concise explanation of the problem you’re experiencing.
Looks like there’s a spacing between letters issue in the new 1.63 update for letters. Too much space.
2. A minimal code example. If you’ve found a bug, this helps us reproduce and repair it.
Look at example here https://sandcastle.cesium.com/?src=CZML%20Billboard%20and%20Label.html
3. Context. Why do you need to do this? We might know a better way to accomplish your goal.
Would like to label objects on the map.
4. The Cesium version you’re using, your operating system and browser.
OS X. 1.63. Chrome.