Hydrate function messes caret when merging paragraphs

[yankaled]

The Hydrate function from commit 103d75b causes a bug when merging blocks. Say that you have Paragraph_1 and Paragraph_2 (different blocks). When you press back on the beginning of Paragraph_2, the new state should be

Paragraph_1 [caret] Paragraph_2

But with the hydrate function the state we get is:

[caret] Paragraph_1 Paragraph_2

[neSpecc]

Can't reproduce. What is your editor.js version?

paragraph-merge.mov