In Labelled group plugin open source version (1.2.7) by default config UI takes up TAP Parser as the test result format, even if I change the format and save it.

When I looked into the config.xml file it has right class name as JUnitParser after I change and save it, but somehow when I reload the config in UI it picks up TAP Parser as default, instead from the config.xml file.

Config before UI change,

<hudson.plugins.labeledgroupedtests.LabeledTestGroupConfiguration>
<parserClassName>hudson.tasks.junit.JUnitParser</parserClassName>
<testResultFileMask>TEST*.xml</testResultFileMask>
<label>Test Results</label>
</hudson.plugins.labeledgroupedtests.LabeledTestGroupConfiguration>