Greetings!
We noticed a strange behavior in the Rich Text Editor control. To reproduce the issue:
Simply type 123 and press enter twice. Then write 456. Now place the cursor between the two lines. If you press now delete, instead of deleting the empty line between the two, the editor deletes the empty line AND the first character of the following line (in our example the character 4).
We strongly believe that this is an abnormal behavior (all know text editors do not behave like that), and we kindly request to fix as soon as possible.