Tab completion after emoji character

Greek letter tab completion works stops working after an emoji unicode character in a code cell. For instance, the first \alpha turns into the greek letter α when I hit tab, but the second \alpha does not:


I’m running JupyterLab 3.0.5 with the following kernel info:

Python 3.8.6 | packaged by conda-forge | (default, Dec 26 2020, 04:30:06) [MSC v.1916 64 bit (AMD64)] … IPython 7.12.0