Taxa explorer: environmental stacked bar inaccurate?

[jtackm]

In the taxa explorer, environmental bar charts on the right side seems inaccurate. E.g. for query "Candidatus Omnitrophica", the bars of the top hits suggest a notable fraction of "animal", but hovering over shows only around ~1-2%, less than suggested, and similar sized bars show quite different values (1.05%, 0.84% and 3.11% look almost identical). It becomes quite clear when comparing charts for MAPv3;99_56452:

vs

(samples / reads). It's also not clear where the 1.05% animal fraction when hovering over the bar of that OTU come from, the taxon page shows different values for samples / reads.