In "code display" mode, when bold or italicized, Sigil uses the markup
<i> and
<b>.
But, in "book display" mode, Sigil uses the markup
<span style="font-style: italic;"> and
<span style="font-weight: bold;">.
Why?
Wouldn't it be easier and more logical to use the markup
<i> and
<b> in both modes?
(in addition, the second method unnecessarily overloads the code, I like to keep my code readable)
Sorry for the rough tone

, but I find that having to cheat with the "clips" to get the logical behavior is weird and very unfortunate for this excellent software.