Has anyone else noticed Firefox becoming more buggy recently?

There's three main things I've noticed. These things only started happening after Mozilla's change in leadership. While they have announced more features since then, I feel like the quality control has gone down a bit.

1. Even with the sidebar disabled, the sidebar will show on the side of the screen for half a second after launching Firefox
2. Sometimes, the "x" buttons on tabs will stop working. I have to middle-click the window to close it or close that window and open a new one
3. The AI popup often gets in the way when selecting text. I think it would be nicer to have it show up in the right click menu after selecting text. I disabled the AI so it won't show up since I never really used it anyways.