Editor Doesn't Get Focus Back After Clicking Button

[lverre]

Steps to reproduce:

1. type down some text
2. click the bold button
3. focus is not back on the editor, so you can't continue typing without further action
4. alt+tab twice: the editor now has the focus but the cursor is back at the beginning of the text you typed

I think there's something that needs to be done about selections and Editr/exec method but nothing I tried worked.