\parencite{}, and extra semicolon

Question

I have a minor but annoying issue with \parencite{}, see screenshot below.

Here my MWE: .tex file

\documentclass[14pt]{article}

\usepackage{fancyhdr}
\pagestyle{fancy}

\usepackage[T1]{fontenc}      
\usepackage[utf8]{inputenc}  
\usepackage{lmodern}
\usepackage{graphicx}
\usepackage{textcomp}
\usepackage[american,italian]{babel}
\usepackage[babel,italian=guillemets]{csquotes}
\usepackage{hyperref}
\usepackage{ifthen}
\usepackage{datetime}

\usepackage[style=philosophy-modern,hyperref,defernumbers=true,annotation=true,sorting=nyvt]{biblatex}
%\usepackage[style=apa,hyperref,sorting=nyvt]{biblatex}  % not better than above
\addbibresource{test.bib}

\begin{document}
\author{myself}
\title{main bib}
\maketitle

\noindent
\nocite{*}

\defbibheading{Main}{\section{Main Section}}
\defbibnote{A}{nice books}

\newrefcontext[labelprefix={A-}]
\printbibliography[heading=Main, prenote={A}, keyword=A]

\end{document}

and .bib file

@Booklet{AAA,
author = {name surname},
label = {Ab},
title = {main title A, also as  \parencite{BBB},
pag.1-99, \parencite{CCC}, {\parencite{DDD}}, pp. 100-199},
howpublished = {Ok},
year = {2014},
location = {MyTown},
annotation = {also as  \parencite{BBB}, pag.1-99, \parencite{CCC}, {\parencite{DDD}}, pp. 1-99},
keywords = {A}
}

@Book{BBB,
author = {alpha beta},
title = {Main Book B},
publisher = {editor},
year = {2015},
keywords = {A}
}

@Book{CCC,
author = {aaa BBB},
title = {Main Book C},
publisher = {editor},
year = {2016},
keywords = {A}
}

@Book{DDD,
author = {{NML} {IJK}},
title = {Main Book D},
publisher = {editor},
year = {2017},
keywords = {A}
}

I do not get why/how I got those extra semicolons (;). Any idea? Your help is welcome.