defects returned by some JQL functions do not take into account the defect mapping

In the execution screen of a Test Run, Xray allows to create or link issues whose issue type is 

a non-configured "defect issue type". This can lead to some invalid 

The current behaviour on some JQL functions can return issues as being "defects" although their issue type is not configured to be handled as a defect, in Xray's Issue Type Mapping settings.

Affected JQL functions:

• issue in defectsCreatedDuringTestExecution("CALC-2675")
• issue in defectsCreatedDuringTesting("CALC-2667")
• issue in defectsCreatedForRequirement("CALC-2630")

How to reproduce:

• create a Test
• run the Test 
• associate some issue as a defect, in the "Execution Defects" section; choose some Issue Type that is not configured as being a Defect Issue Types, in Xray's Issue Type Mapping setting
• use the JQL functions to obtain the defects