[4.3. RC1] Audio block disappears when align right or left in Chrome

[bph]

Describe the bug
When I add an audio block to a paragraph block and align it left or right and then click outside the editing space, the audio block disappears.
It's still there, when I squint I can see the Audio label. . Clicking on it brings back the block into view

To Reproduce
Steps to reproduce the behavior:

1. Add a new post
2. Add a paragraph with some text
3. add an audio block and align it right
4. click outside the editor space.

Expected behavior
The audio block is still visible

Screenshots
Here is the video. http://recordit.co/898tjKTCao

When I looked closer I see some residue of the block and when I click on it, I get the tools bar and the display of the block back. See in this little video: http://recordit.co/px35d8sUae

Desktop (please complete the following information):
Seems to only happen with Google Chrome: 70.0
It works fine with Firefox Developer EDition
63.0b12
Video #3: http://recordit.co/UGsZDzGtu6

In reference of this PR: #11357

[dashkevych]

I've had the same issue when I was adding an audio block in the Editor. I've fixed it by adding this custom CSS to the editor styles:

[data-type="core/audio"][data-align="left"] .editor-block-list__block-edit,
[data-type="core/audio"][data-align="right"] .editor-block-list__block-edit {
  width: 50%;
}

[jasmussen]

On it, will have a fix in a bit.

[jasmussen]

Fixed in #11749, thanks for the helpful report.