There already is a forum post where a minor entry that is supposed to show up in the headword list is not shown, whereas this post reports that showing the entries was possible, but showing the glosses not. Unfortunately, both topics have not been publicly answered.
I, too, have the issue that minor entries, unspecified variants to be precise, are not shown in the headword list. I have the feeling that at one point in time they were shown so I’m wondering what went wrong. I have the “Show Minor Entry” function checked in Fieldworks, both in the main entry and in the minor entry. I also see this in the LIFT-file that I export. Here is what FLEX exports (I took Spanish as an example):
<lexical-unit>
<form lang="es"><text>escuelaVARIANT</text></form>
</lexical-unit>
<trait name="morph-type" value="stem"/>
<relation type="_component-lexeme" ref="escuela_8084ae0c-efcb-4111-a877-851cbfe0d09c" order="0">
<trait name="variant-type" value="Unspecified Variant"/>
</relation>
</entry>
If I uncheck “Show Minor Entry” this is reflected in the LIFT-file, FLEX adds the following before /relation:
<trait name="hide-minor-entry" value="1"/>
Thus, I have the feeling that the issue lies in DAB, but I just can’t find a way to control this. The ‘Fields’ menu only really lets you control how things are displayed if they are there, and the unspecified variants are showing up there…