[IE] Compatibility view: Caret goes outside of the last block element, when showblocks is enabled

[Marek Lewandowski]

You're able to move caret outside of any block element (in classic editor that will be directly into a body).

I've checked briefly and it seems that it was introduced in 4.3.0, since i couldnt repro it in 4.2.3, please double check it.

1. open any sample with CKEditor (i.e. samples/replacebyclass.html)
2. enable showblocks plugin
3. press ctrl + end

Expected result:
Caret should be stopped at the end of last node.

Current result:
Caret is placed after last block element, directly in body elmeent.

additional info:

1. I've experienced it in IE9 compat mode, did not tested in other IEs.
2. Seems that issue does not appear without showblocks plugin.

[Jakub Ś]

I was able to reproduce this issue from CKEditor 4.3 in all versions of IE in Compatibility mode.