Generating an Inventory does not work in Sketch 51.2

Unfortunately, it turns this


into this:

The design contains 4 colors, 4 text styles and 5 symbols (nested and flat ones). To be fair, the colors weren’t added as documents colors. But the text styles weren’t recognized. Only one which was the style of the label of one of the buttons.

End export doesn’t work at all.

Start by reproducing inventory generation in Sketch 51.2 using the design described in the issue, including its text styles and nested symbols. Investigate why the styles are not recognized and why end export fails; done means the inventory includes the expected styles and symbols and export completes successfully.

Written by the indexing model from the issue text.