:bug There is no'\,' in the original text, but'\,' appears in the exported ics file

[sdy623]

Environment :Windows NT 10.0 19042.1110
Python 3.7.10 with icalendar 4.0.7.
This is my python code section
if "aaa" in courseRoom : event.add('X-APPLE-STRUCTURED-LOCATION','geo:19.19810,114.514', parameters={'VALUE': 'URI', 'X-APPLE-MAPKIT-HANDLE': '','X-APPLE-RADIUS':'80','X-TITLE':'aaa'})
Section of Exported ics file
LOCATION:aaa X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-APPLE-MAPKIT-HANDLE=;X-APPLE-RADIU S=80;X-TITLE=aaa:geo:1919.810\,114.514
I found that if a ',' appears ,the output file appears a ',' why this problem occurs and how to solve the problem.
Thanks.

[Vincent-Stragier]

I think it is to escape , (see the RFC5545).

You can read:

   ESCAPED-CHAR = ("\\" / "\;" / "\," / "\N" / "\n")
      ; \\ encodes \, \N or \n encodes newline
      ; \; encodes ;, \, encodes ,

Did it cause any issue?