Data Filter Error when selecting multiple filters

When selecting multiple filters on a mashup with a Data Filter I get the message:

Wrapped java.lang.Exception: No filters were defined for AND expression Cause: No filters were defined for AND expression

When selecting one filter I have a query like:

{"filters":{"fieldName":"name","type":"LIKE","value":"0x*"}}

And after adding a second filter Iend up with something like this:

{"filters":{"filters":{},"type":"AND"}}

I'm using the ThingWorx 7.3.1-b39 Composer.