Invalid behavior when pressing enter on selected text

[Wiktor Walc]

I managed to confirm this on FF 3.5.5. I cannot reproduce it on IE8. It happens only when <br /> is at the end of line (regardless of enterMode).

Steps to reproduce

Paste the following text in soruce mode:

TEST1&nbsp;&nbsp;&nbsp; TESTESTTEST T1<br />
TEST2&nbsp;&nbsp;&nbsp; TESTESTTEST T2<br />
TEST3&nbsp;&nbsp;&nbsp; TESTESTTEST T3<br />

• switch to WYSIWYG mode
• put the cursor after TEST2
• press shift-end, to select everything until the end of the line
• then, press enter
• the content suddenly looks like this :

TEST1    TESTESTTEST T1
TEST2
    TESTESTTEST T2
TEST3    TESTESTTEST T3

Where you would expect it to be something like :

TEST1    TESTESTTEST T1
TEST2

TEST3    TESTESTTEST T3