I am also having this problem on my mac OS 10.11.6, which is the most updated OS I can run on my 2014 Macbook Air. I hope this bug is fixed soon. Minecraft is about the only happy place I have right now. Not being able to get past the launcher is a real disappointment, especially with 1.18 snapshots waiting for me.
Karoline Ellis
I am also having this problem on my mac OS 10.11.6, which is the most updated OS I can run on my 2014 Macbook Air. I hope this bug is fixed soon. Minecraft is about the only happy place I have right now. Not being able to get past the launcher is a real disappointment, especially with 1.18 snapshots waiting for me.