This has probably been fixed in 5.99 (the unstable development version) (see Tools for cooperation?). If not, it should be reported to the issue database.
Just a friendly warning. Trying out the development version is a one-way path for any projects that you save. You can have both the stable and the development version of the KiCad program suite installed on the same machine (or should be able to, I’m not sure if it works on MacOS since I don’t have any MacOS systems), but there are enough new things in the development version file formats that going back to the stable is difficult (for PCB files) to impossible (for the schematic files which are a completely new file format). Remember, back-ups of your project files are your friends.