If you configure a Parameter to be a TEXT_MULTIFIELD and add a value that contains a ";" it is saved incorrect in CRX.
You can see this after a page-reload of the Config-Editor as the String will now be split where the ";" used to be.
a similar problem also applies to parameters of Map data type when typing in additional "=" or ";".
solved in rev. 284be792e2ad23d4cd29373d68c84376c727e0e4 for string array and map data types
this was quite a big change, please test it before we make a release