Steps to reproduce:

1. define an http item
2. write the url with query parameters like (a call to Prometheus API)
   http://localhost:9090/api/v1/query?query=irate(node_network_transmit_bytes_total\{device!="lo",instance="192.168.150.101"}[1m])
3. Click on the parse button
4. the result will be
   
5. {the value of the query field is truncated to the first "=" sign

Expected:

The value of the query field goes till the "&" sign or the end of the url