I have been having the exact same issue since a few days ago. version 1.20.2. My mouse works normally in the launcher, and on every other application. In Minecraft, I can move the mouse, and highlight items. I can navigate the menu via keyboard shortcuts. However every time I right or left click, the game minimizes. Additionally the scroll wheel is not functional in the game, but works outside of the game. Unlike the other poster, I cannot get single player mode to launch, that also minimises.
I have been having the exact same issue since a few days ago. version 1.20.2. My mouse works normally in the launcher, and on every other application. In Minecraft, I can move the mouse, and highlight items. I can navigate the menu via keyboard shortcuts. However every time I right or left click, the game minimizes. Additionally the scroll wheel is not functional in the game, but works outside of the game. Unlike the other poster, I cannot get single player mode to launch, that also minimises.
Going out of full screen resolves this issue for me as well. Going back to full screen and the issue returns. I am on MacOS 10.15.7 on an iMac.