Erratic behavior when creating a title in a synchronized block.

As shown in the video:

- After applying the title, the cursor jumps out of the synchronized block, so you end up typing somewhere else if you're not careful

- The cursor also jumps at other times (still visible in the video)

- and after entering the title, you press ENTER to type your text. You’d expect to see a block, but that’s not the case—the handle that lets you select, move, or view the context menu doesn’t appear. The same thing happens if you add lines; the handle still doesn’t appear.