Text Block: Single enter in empty text block sometimes doesn't expand boundaries

[jasmussen]

This bug is so exotic I had to record a video to show it:

https://cloudup.com/cX_jKezHtgQ

Here's what happens:

• When you just press enter in an empty text block, the boundaries don't fade out, so you can see that they also don't expand
• This happens so long as you have all empty text blocks
• As soon as you type some text in one of the text blocks, pressing enter expands the block boundaries like they should, even on subsequent empty text blocks

Expected behavior: enter should always expand the block boundaries, even if they fade out.

[jasmussen]

I can't reproduce this anymore, so closing.