I don't know if this will be particularly helpful, but here's a method I use . . .
First, I select the quote button that looks like this

In my text box, the following code will appear (without the spaces) [ quote ][ /quote ]
Then I use my cursor to highlight the text I want to quote, right click and select the option 'copy.'
I move my cursor to the space between the quote bars and paste the copied text like this:
[ quote ]I move my cursor to the space between the quote bars and select paste like this:[ /quote ]
When I post the message, it appears like this:
I move my cursor to the space between the quote bars and select paste like this:
Hope that helps
