footnote numbering in boxes

[Michael Berger]

Dear all,

I observe that numbering of footnotes in boxes is automatically changing 
to 'lettering' - see screen shot. Is this intended behavior or could it 
be specific to classicthesis? I am not sure to like it or not.

Any comment is appreciated.

I am using Lyx 2.2.2, texlive 2016, Miede's classicthesis 4.2

Thanks & cheers,

Michael