[Opera] Apply block style moves cursor to the start of block

[Garry Yao]

1. Load replacebyclass sample page with the following content and selection:

   <p>foobar^</p>
   

2. Open Format combo to apply any block style;

• Actual: Format get applied with cursor collapsed to the start of block.

Test fails: ​http://ckeditor4.t/dt/core/style/editor.html?name=test-applyremove-style-on-editor---basic

[Garry Yao]

Regression of ​c83f76.

[Piotrek Koszuliński]

I can't reproduce this issue. And that test was failing for a couple of months.

[Garry Yao]

Ok, the reproducing of ticket tc is not constant, but it can be constantly produced if the original cursor position is at the end of block.

Test test failure I'm pointing to, is particularly the following TC, that are masked by another unrelated failure in the same test:

this.assertApplyStyle( '<p>foo^</p>', '<h1 class="foo" style="text-align:right;">foo^</h1>', block );

[Garry Yao]

The regressed change is ​reverted.