Different number of articles in keyword search bar chart and resources

[theorm]

Bar chart shows X number of hits for a keyword but the 'show resources with specific keyword' shows different information.

[theorm]

I tried steps to reproduce from the previous issue and it worked as expected:

For example: AMP year 1867 has within the bar chart 41 hits for the keyword "Mundy". The displayed resources for "Mundy" in that year is only 12. The opposite happens for the year 1866: bar chart displays 2 hits. The resources pane shows 29 hits.

http://10.240.4.163/explorer?step=23&filters=eyJrZXl3b3JkUHJlc2VuY2VGcmVxdWVuY3ktMCI6eyJrZXl3b3JkIjoiTXVuZHkifX0%3D&editPlotId=keywordPresenceFrequency-0&explorables=keywordPresenceFrequency&binMethod=year&resourcesSubfilter=keywordPresenceFrequency-0