Hi,
I think what you are experiencing is due to the grouping of content. When you insert text from a template then it's treated as a block of data but only if you backspace from the last character of the block. You should be able to backspace and edit other data fine. This is intentional as a means to save you from backspacing through the entire block if you inserted something by mistake. If we changed that everyone would complain they have to backspace the whole block of text. Same for the highlighting....you can highlight parts but once you hit that last character it assumes you're in block mode.
