It doesn't seem to be a bug. Because when some words in ARABIC are written
inside a LATIN paragraph the command "\R{arabic phrase}" is used to indicate
that. The command "\R{arabic phrase}" is supposed to change the language to
ARABIC too. But when a new paragraph begins such that the previous paragraph is
LATIN, then it uses '\selectlanguage{ARABIC}" command before the new paragraph
for just one time for all the next ARABIC paragraphs.
Moreover the default language of the attached document is ARABIC. Therefore
you see the command "\selectlanguage{arabic}" as the last command of the LATIN
paragraph. It indicates that if you start a new paragraph the language of that
paragraph is ARABIC.
Mostafa
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