lupdate silently accepts multiple contradicting source strings for the same message id

lupdate creates one tranlation sections for different strings.

It creates:
<location filename="wlcreateanalysiswizard.cpp" line="70"/>
<location filename="wlcreateanalysiswizard.cpp" line="79"/>
<location filename="wlcreateanalysiswizard.cpp" line="88"/>
<source>Load a TOF File</source>

whilie line 79 is:
m_title = tr("Load a FST File");
and line 88 is:
m_title = tr("Load a Fnd File");

The issue is very wired and should be a bug.