I have made a argument map using the "entity with attributes" node from the Entity Relationship palette. For my use, I have added one label in the top compartment of the node. In the bottom compartment, there's only the default label.
I exported it to pdf, with "plain text with embedded fonts" option.
In the pdf file, I can select/search text in both the labels in the top compartment.
But I cannot do that for the text in the bottom compartment label. [BUG]