[Check_mk (english)] ? (ASCII 0x3F) character is swept away from MRPE check names

Hi

According to the werk 2937 info (https://lists.mathias-kettner.de/pipermail/checkmk-werks-lvl1/2016-January/002501.html)

“mrpe services can now contain any character using percent encoding”

but I realized that any ? character (ASCII 0x3F) in my MRPE check names are swept away, i.e., the /etc/check_mk/mrpe.cfg file in the monitored nodes include some MRPE service whose name include %3F, like for instance,

xxx%3Fyyyy /usr/local/nagios/plugins/libexec/check_http -I 127.0.0.1

but that character ? does not appear in the CheckMk Site Console.

I tried with other ASCII characters like # (0x23) and it is properly displayed.

Any help?

Best regards

P.D: Using CheckMK CRE 1.4.0p22