Align buttons' states not refreshed after changing image alignment

[Piotrek Koszuliński]

1. Open any sample.
2. Insert image.
3. Select that image.
4. Click align left.
5. Image is aligned left, but align left button isn't active.
6. Blur image.
7. Select image again.
8. Align left button is now active.

The same happens for align right.

Expected: align buttons' states should be updated after changing image alignment.

[Jakub Ś]

To reproduce:

1. Clear editor contents
2. Click on image toolbar button
3. Insert image URL and click OK
4. Align image to the right with align buttons.
5. Click next to image and then on the image.

Notice that align right button is no longer active.

I was able to reproduce this problem from CKEditor 4 beta in every browser except Webkit.
In Webkit, this problem can be reproduced from CKEditor 3.6.5 rev [7624]. I have reported different bug for it #9983 but perhaps there can be one fix.

NOTES:

1. Alignment feature was introduced in #7430
2. There is still unresolved feature for image cantering #8938

[Jakub Ś]

#11558 was marked as duplicate.